PYSEC-2026-2403 Bugsink: DOS using large numbers of event tags

Summary In affected versions, Bugsink stores every tag supplied with an incoming event. An event with an unusually large number of custom i.e. supplied by an attacker tags can therefore make ingestion spend more time than intended writing tag rows. Bugsink uses a single-writer database...

PYSEC-2026-2406 Bugsink: Issue bulk actions can affect another project’s issue if its UUID is known

Description Bugsink’s issue list supports bulk actions such as resolving or muting selected issues. In affected versions, the issue list view authorizes access through the project in the URL, but applies the requested bulk action to the submitted issue IDs without also requiring those issues to...

PYSEC-2026-2404 Bugsink affected by authenticated arbitrary file write in artifactbundle/assemble

Authenticated arbitrary file write in artifact bundle assembly Summary An authenticated file write vulnerability was identified in Bugsink 2.1.0 in the artifact bundle assembly flow. A user with a valid authentication token could cause the application to write attacker-controlled content to a...

PYSEC-2026-1227 Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input (via CPU)

Impact In affected versions, a specially crafted Brotli-compressed envelope can cause Bugsink to spend excessive CPU time in decompression, leading to denial of service. This can be done if the DSN is known, which it is in many common setups JavaScript, Mobile Apps. Patches Patched in Bugsink 2.0...

PYSEC-2026-1225 Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input

Impact In affected versions, brotli "bombs" highly compressed brotli streams, such as many zeros can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a Denial of Service...

PYSEC-2026-301 Bugsink is vulnerable to Stored XSS via Pygments fallback in stacktrace rendering

Summary An unauthenticated attacker who can submit events to a Bugsink project can store arbitrary JavaScript in an event. The payload executes only if a user explicitly views the affected Stacktrace in the web UI. Details When Pygments returns more lines than it was given a known upstream quirk...

Denial of Service (DoS)

Overview bugsink is a Self-hosted Error Tracking Affected versions of this package are vulnerable to Denial of Service DoS through the ingestion process. An attacker can cause the application to become temporarily unavailable to other users by submitting an event containing an unusually large...

GHSA-5X67-J5XG-C5GJ Bugsink: DOS using large numbers of event tags

Summary In affected versions, Bugsink stores every tag supplied with an incoming event. An event with an unusually large number of custom i.e. supplied by an attacker tags can therefore make ingestion spend more time than intended writing tag rows. Bugsink uses a single-writer database...

EUVD-2026-31860

Bugsink: Project scoping missing in sourcemap and debug-file lookup...

GHSA-5389-F7VH-WXJ8 Bugsink: Project scoping missing in sourcemap and debug-file lookup

Summary Bugsink before 2.2.0 resolved sourcemaps and debug files by debug ID without scoping that lookup to the project that owned the uploaded metadata. An authenticated user with access to one project could cause event processing in that project to use sourcemap/debug-file metadata uploaded for...

Missing Authorization

Overview bugsink is a Self-hosted Error Tracking Affected versions of this package are vulnerable to Missing Authorization in the lookup process for sourcemaps and debug files, which was not properly scoped to the owning project. An attacker can access source context or symbolication-derived...

Authorization Bypass Through User-Controlled Key

Overview bugsink is a Self-hosted Error Tracking Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the bulk issue action process. An attacker can modify the state of issues in another project by submitting valid issue UUIDs for which they have...

EUVD-2026-31862

Bugsink: Issue bulk actions can affect another project’s issue if its UUID is known...

Bugsink: Issue event views can show an event from another project if its UUID is known

Description Bugsink issue event pages accept a direct event identifier from the URL and, in affected versions, look up that event without also requiring it to belong to the issue in the URL. This is a project-boundary authorization issue: a logged-in user with access to one project can view anoth...

EUVD-2026-31861

Bugsink: Issue event views can show an event from another project if its UUID is known...

CVE-2026-47716

Bugsink is a self-hosted error tracking tool. Prior to 2.2.0, In affected versions, the issue list view authorizes access through the project in the URL, but applies the requested bulk action to the submitted issue IDs without also requiring those issues to belong to that project. This...

PT-2026-49061

Name of the Vulnerable Software and Affected Versions Bugsink versions prior to 2.2.2 Description Bugsink stores every tag provided with an incoming event. An attacker can submit an event containing an unusually large number of custom tags, causing the ingestion process to spend excessive time...

CVE-2026-47715

Bugsink is a self-hosted error tracking tool. Prior to 2.2.0, Bugsink issue event pages accept a direct event identifier from the URL and, in affected versions, look up that event without also requiring it to belong to the issue in the URL. This is a project-boundary authorization issue: a...

CVE-2026-47716

Bugsink is a self-hosted error tracking tool. Prior to 2.2.0, In affected versions, the issue list view authorizes access through the project in the URL, but applies the requested bulk action to the submitted issue IDs without also requiring those issues to belong to that project. This...

CVE-2026-47715

Bugsink is a self-hosted error tracking tool. Prior to 2.2.0, Bugsink issue event pages accept a direct event identifier from the URL and, in affected versions, look up that event without also requiring it to belong to the issue in the URL. This is a project-boundary authorization issue: a...