fast-uri vulnerable to host confusion via literal backslash authority delimiter

Impact fast-uri v4.1.0 and earlier do not treat a literal backslash U+005C as an authority delimiter. Node's native WHATWG URL used by fetch, undici, and Node's http/https clients normalizes \ to / for special schemes http, https, ws, wss, ftp, file, so the two parsers extract different hosts fro...

sharp inherited vulnerabilities in libvips: CVE-2026-33327, CVE-2026-33328, CVE-2026-35590, CVE-2026-35591

Impact A number of vulnerabilities, two rated as "High" severity using CVSSv4, have been discovered and fixed in the upstream libvips dependency. Those processing untrusted input with versions of sharp prior to 0.35.0 are affected. Patches Using prebuilt binaries provided by sharp? Most people re...

fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits

Impact fast-xml-parser processes multiple "DOCTYPE" declarations within a single XML document. Each declaration passes its entities to @nodable/entities through addInputEntities. addInputEntities resets the entity expansion counters every time it is called. An attacker can therefore insert...

GitPython: Environment-variable exfiltration via os.path.expandvars() on Repo.clone_from() URL

Summary Repo.clonefrom passes the caller-supplied remote URL through Git.polishurl, which on every non-Cygwin platform calls os.path.expandvars on the URL before handing it to git clone. An attacker who controls the URL argument — the documented use case for clonefrom in "import repository from...

Rails HTML Sanitizers: Possible XSS vulnerability with certain configurations

Summary There is a possible cross-site scripting vulnerability in rails-html-sanitizer when the sanitizer is configured to allow an SVG reference element such as . See related GHSA-9wjq-cp2p-hrgf in Loofah, whose SVG local-reference logic rails-html-sanitizer mirrors. - Versions affected: = 1.0.3...

Node.js Adapter for Hono: Unauthenticated memory-leak DoS via aborted WebSocket handshake

Summary A WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header leaks memory permanently. The request's IncomingMessage is retained in an internal map and a pending promise is never settled, even though no connection is established. Since the...

gRPC-Go: xDS RBAC and HTTP/2 Vulnerabilities

Multiple security vulnerabilities have been identified and addressed in grpc-go affecting the xDS RBAC authorization engine internal/xds/rbac and the HTTP/2 transport server implementation internal/transport. These vulnerabilities could result in: - Authorization Bypass Fail-Open when translating...

Loofah `allowed_uri?` does not detect `javascript:` URIs split by numeric character references without semicolons

Summary Loofah::HTML5::Scrub.alloweduri? does not correctly reject javascript: or vbscript: URIs when the scheme is split by a numeric character reference that has no trailing semicolon. A browser decodes such references and resolves the URL to an executable javascript: scheme, while alloweduri?...

Loofah: SVG `href` attribute bypasses local-reference restriction

Summary Loofah's HTML5 sanitizer restricted only the xlink:href attribute on certain SVG elements to local, same-document references. Browsers also accept a plain href attribute as an alternative to the deprecated xlink:href per the SVG 2 spec, but Loofah did not apply the same restriction to it,...

jackson-databind: @JsonView ypassed for @JsonUnwrapped container properties on deserialization

Summary UnwrappedPropertyHandler.processUnwrapped replays the buffered JSON for a @JsonUnwrapped property by iterating its properties and calling prop.deserializeAndSet with no prop.visibleInViewctxt.getActiveView guard — the exact guard processUnwrappedCreatorProperties received in the 5971 /...

TypeORM: migration:generate template-literal code injection

Summary typeorm migration:generate embeds database schema metadata into JS/TS template literals, escaping backticks but not $.... An attacker who can write schema metadata column comments, defaults, view definitions achieves arbitrary code execution on the host that loads the generated migration...

jackson-core: Async parser maxNumberLength bypass via chunked digit accumulation (incomplete fix for GHSA-72hv-8253-57qq)

Summary The fix released in jackson-core 2.18.6 and 2.21.1 for GHSA-72hv-8253-57qq Number Length Constraint Bypass in Async Parser, published 2026-02-28 is incomplete. The fix commit b0c428e6 1555 wired validateIntegerLength into a new setIntLength helper and called it at every place where the...

Gitea: TOTP TOCTOU race on web 2FA paths + missing replay check on Basic-Auth `X-Gitea-OTP` surface

Summary I'm reporting two related TOTP one-time-use defects in Gitea that survive the CVE-2021-45331 fix. The 2018 fix PR 3878 introduced the TwoFactor.LastUsedPasscode field and added an in-memory inequality check on the web 2FA login path. That check works correctly in the single-request case,...

Gitea: Public-Only Personal access tokens scope bypass in Organization and Permission Endpoints

Summary A personal access token restricted with the public-only scope can still retrieve private organization membership and organization permission details for its own account through organization-listing endpoints. This bypass breaks the intended guarantee that such tokens are limited to public...

Gitea: SSRF via Migration Asset Downloads Bypasses hostmatcher — Reads Internal Files and Cloud Metadata

Summary Gitea has robust SSRF protection via hostmatcher.NewDialContext for webhook and migration clone URLs, which validates resolved IPs at the TCP dial level. However, three code paths use raw http.Get Go's DefaultClient which completely bypasses this protection, enabling SSRF to internal...

Gitea: Webhook Authorization Header Returned in Plaintext via API

Summary The ToHook function in services/webhook/general.go decrypts the webhook's HeaderAuthorizationEncrypted field and returns the plaintext authorization header in the API response. Any repository admin can read the full plaintext value of webhook authorization headers Bearer tokens, Basic aut...

Gitea: Cross-Repo Information Disclosure via Org-Level Actions Run/Job APIs

Author: Prakhar Porwal Date: 2026-05-24 Target: Gitea self-hosted Git service Branch tested: main @ b7e95cc48c development build, go1.26.3 Component: routers/api/v1/org/action.go org-level Actions API OWASP: API3:2023 Broken Object Property Level Authorization --- 1. Summary The org-level Actions...

Gitea: GHSA-8fwc-qjw5-rvgp ClearRepoWatches fix not applied to API EditRepo path — sister code path retains stale watches on public->private

Summary GHSA-8fwc-qjw5-rvgp "Gitea may send release notification emails for private repositories to users whose access has been revoked", fix in PR 36319 / commit 8a98ac22 added repomodel.ClearRepoWatches as a defense for the state transition public→private. The cleanup was wired into...

Gitea: Public-only API token restriction is not enforced on team API routes

Summary Gitea's /api/v1/teams/id API routes do not correctly enforce the public-only access token restriction. A public-only token is intended to limit API access to public repositories and public organizations. However, several team API routes continue to return private team repository metadata...

Gitea: Private org member list leaked via /members API endpoint — incomplete fix for PR #38145

Summary PR 38145 fixed ListPublicMembers and IsPublicMember but missed ListMembers. Any authenticated user can enumerate ALL members not just public ones of a private organization. Affected Versions = v1.26.4 latest and main branch Root Cause routers/api/v1/org/member.go — ListMembers: // Missing...

Gitea: Improper authorization on OAuth sign-in callback silently re-enables administrator-disabled accounts

Summary The OAuth2 sign-in callback in Gitea 1.26.1 unconditionally re-enables a locally-disabled account whenever the user authenticates through a linked external identity provider, silently undoing any administrator-initiated Disable Account action and issuing a fresh authenticated session in t...

Gitea: Notification API leaks private issue metadata after access revocation

Summary An information disclosure issue in the Gitea Notification API allows users who have lost access to a private repository to continue accessing private issue or pull request information through existing notification threads. Although repository information is hidden after access revocation,...

Gitea: Unauthorized Access to Labels of Private Organizations

Summary Gitea 1.26.2 does not properly enforce organization visibility restrictions on organization label read endpoints. A user without access to a private organization can retrieve labels belonging to that organization through the Organization Labels API. As a result, label metadata intended to...

Gitea: Cached Per-Branch Permission Check in Pre-Receive Hook Allows Full Repository Write

Vulnerability Header | Field | Value | | ------------------- | ----------------------------------------------------------------------------------- | | Vulnerability Title | Cached Per-Branch Permission Check in Pre-Receive Hook Allows Full Repository Write | | Severity Rating | High | | Bug...

Gitea: Fork Synchronization Continues After Parent Repository Changes from Public to Private

Summary The POST /api/v1/repos/owner/repo/merge-upstream endpoint continues to synchronize commits from a parent repository after the parent repository has been changed from public to private. A fork created while the parent repository was public can still receive commits made after the parent...

Gitea: Two SSRF findings

| --- | --- | | Versions tested | gitea/gitea:1.26.2 digest sha256:7d13848af12645600a5f9d93ee2560daa9c6fa6b5b859b7bff3a5e1c0b661031; gitea/gitea:latest resolves to the same digest at time of writing | | Source review | git checkout v1.26.2 commit 2c749ce | | Reproduction | bash runpoc.sh single...

Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

Summary The Locale middleware that runs in front of every unauthenticated request calls golang.org/x/text/language.ParseAcceptLanguage on the raw Accept-Language header without imposing a size or shape filter. The underlying parser has quadratic-time behaviour on long lists of malformed language...

Gitea SSH Key Parser Denial of Service

Gitea's SSH key ingestion endpoint accepts keys in RFC 4716 SSH2 format and normalises them before storage. The normalisation function contains an ON² string concatenation loop with no input size limit, meaning a single malicious key submission can force the server to perform an amount of work th...

Gitea: Repository Visibility Manipulation via Git Push Options

Repository Visibility Manipulation via Git Push Options | Field | Value | |-------|-------| | Affected File | routers/private/hookpostreceive.go | | Affected Function | HookPostReceive | | Affected Lines | 173–225 | | Prerequisite | Attacker must have owner-level or admin collaborator access to t...

Gitea: OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)

Description Gitea's OAuth2 sign-in callback reactivates a deactivated user account IsActive=false when the user signs in through an authentication source that does not issue refresh tokens notably GitHub, and any OIDC/OAuth2 source configured without offlineaccess. PR 38009 added a gate intended ...

Gitea LFS Deploy-Key Privilege Escalation

Vulnerability Header | Field | Value | | ------------------- | ----------------------------------------------------------- | | Vulnerability Title | Gitea LFS Deploy-Key Privilege Escalation | | Severity Rating | High | | Bug Category | Insufficient Authorization | | Location |...

Gitea: Local File Inclusion via file:// URI in Migration Restore

Local File Inclusion via file:// URI in Migration Restore Target: go-gitea/gitea Component: services/migrations/giteauploader.go, modules/uri/uri.go Severity: High Affected Versions: = v1.22.x all releases, master as of latest commit Researchers: - Isa Can — Eresus Security...

Gitea: Null Pointer Dereference in AddTime API Causes Authenticated Denial of Service

Summary The AddTime API handler continues execution after an error returned by GetUserByName. When a repository administrator specifies a non-existent user name, an error response is generated but execution does not stop. Subsequent code dereferences a nil user pointer, resulting in a runtime...

Gitea: OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes

Summary The OIDC userinfo endpoint GET /login/oauth/userinfo accepts Gitea API tokens as bearer credentials but does not enforce API token scopes before returning identity claims. A personal access token scoped only to read:misc can successfully retrieve user information from the OIDC userinfo...

Gitea: Private Repository Metadata Remains Accessible After Access Revocation

Summary A user who previously had access to a private repository can continue to obtain repository metadata through GET /api/v1/user/starred after their access to the repository has been revoked. After a collaborator is removed from a private repository, direct access to the repository is correct...

Gitea: Internal API HTTP client hardcodes InsecureSkipVerify:true with no config override

Summary Gitea's internal API HTTP client modules/private/internal.go hardcodes TLSClientConfig.InsecureSkipVerify = true with no configuration override. It is the only outbound TLS client in the codebase that cannot be made to verify its peer's certificate — webhook, migrations, MinIO, LDAP, SMTP...

Gitea: REST API exposes organization membership of private organizations to public

Summary The endpoint "/orgs/org/publicmembers/username" + GET exposes organization membership of public members in a private organization. PoC 1. Spin up the nightly container of Gitea. 2. Perform the default installation. 3. Register a new user let's call this user "user1". 4. Create a new...

Gitea: RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Summary Gitea's RSS/Atom feed handlers accept API-token Basic auth but perform no token-scope or public-only enforcement. A personal access token that is correctly blocked HTTP 403 from a private repository on /raw, /media, /archive, and /releases/download/... — because it is marked public-only o...

Gitea: Fork-PR Actions task can read a third private repository via the collaborative-owner branch (missing fork-PR guard)

Summary GetActionsUserRepoPermission models/perm/access/repopermission.go decides whether an Actions task token may access a target repo. Its cross-repo branches each enforce a fork-PR discriminator — except the collaborative-owner branch, which is missing the !task.IsForkPullRequest guard that i...

Gitea: Denial of Service via Unbounded io.ReadAll in NPM Package Tag Endpoint

Summary An unbounded io.ReadAllctx.Req.Body call in the NPM package tag API endpoint allows any authenticated user to crash the Gitea server by sending a single large HTTP request. The request body is read entirely into memory with no size limit, causing an Out-of-Memory OOM kill. With concurrent...

Gitea: Cross-repository label-ID enumeration oracle via unscoped DeleteIssueLabel API

Summary The API endpoint DELETE /repos/owner/repo/issues/index/labels/id loads the label by ID with a global, unscoped lookup and never verifies the label belongs to the URL's repository or its owning organization. Because the response status differs by whether the label ID exists anywhere on the...

Gitea: Personal access token scope enforcement bypass on the repository home page (`GET /{owner}/{repo}`) discloses private repository contents

Summary A personal access token PAT or OAuth2 token that does not carry the repository scope or that is public-only is correctly rejected HTTP 403 by the recently hardened web content routes archive download, raw/media file download, and repository RSS/Atom feeds. However, the repository home pag...

Gitea: Public-only repository tokens can update private PR head branches

Summary Gitea allows a public-only,write:repository token to update a private pull request head branch through a public base repository route. The vulnerable endpoint is: text POST /api/v1/repos/public-owner/public-repo/pulls/index/update Gitea checks the token's public-only restriction against t...

Gitea: Repository migration SSRF via multi-answer DNS allow-list bypass

Summary Gitea's repository migration URL validation can be bypassed when a migration hostname resolves to multiple IP addresses. The validation logic accepts the destination if any resolved IP is allowed, even if another resolved IP is loopback, private, or otherwise blocked. The later git clone...

Gitea: SSRF in restore-repo via unsanitized pull_request.yml Head.CloneURL

Summary Gitea's restore-repo CLI command restores a repository from a dump directory/archive. When parsing pullrequest.yml from that dump, the Head.CloneURL field is used to add a git remote and fetch from it with no validation, because the safety check that's supposed to guard it...

Gitea: Cross-repository IDOR in issue-dependency removal lets an attacker tamper with and comment on private repos they cannot access

Details RemoveDependency in routers/web/repo/issuedependency.go takes a removeDependencyID form parameter identifying the other issue by its global numeric ID, and fetches it with issuesmodel.GetIssueByIDctx, depID - no repository or permission check at all. It then calls...

Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write

Summary Gitea Actions Artifacts V4 signed upload/download URLs can be rewritten to access a different running task and repository context while preserving the original HMAC signature. An attacker with permission to run a Gitea Actions job can turn a signed URL for an attacker-controlled artifact...

Gitea: Permanent Fork PR Workflow Approval Gate Bypass

| Field | Value | |-------|-------| | Identifier researcher-assigned | GITEA-2026-004 | | Product | Gitea self-hosted Git service | | Component | Gitea Actions — fork pull request approval gate | | Affected versions | All Gitea releases v1.20.0 and later, including the latest main...

Gitea: LFS authentication bypass via malformed SSH sub-verb allows unauthorized read access to private repositories

Summary A flaw in SSH LFS sub-verb handling allows any authenticated SSH user to obtain valid LFS credentials for any repository on the instance, including private repositories they have no access to. This enables unauthorized download of all LFS objects from any private repository. Details In...

Gitea: Unauthenticated ReDoS via CODEOWNERS pattern matching allows denial of service

This issue has been found by a security agent and review by myself. Gitea's CODEOWNERS feature uses the regexp2 library to match file paths against ownership rules. User-supplied patterns are passed directly to regexp2.Compile with no sanitisation and no match timeout. This allows an attacker to...