PYSEC-2026-1280 Cowrie has a SSRF vulnerability in wget/curl emulation enabling DDoS amplification

Summary A Server-Side Request Forgery SSRF vulnerability in Cowrie's emulated shell mode allows unauthenticated attackers to abuse the honeypot as an amplification vector for HTTP-based denial-of-service attacks against arbitrary third-party hosts. Details When Cowrie operates in emulated shell...

PYSEC-2026-1616 MCP Python SDK vulnerability in the FastMCP Server causes validation error, leading to DoS

A validation error in the MCP SDK can cause an unhandled exception when processing malformed requests, resulting in service unavailability 500 errors until manually restarted. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Thank y...

PYSEC-2026-1872 Requests vulnerable to .netrc credentials leak via malicious URLs

Impact Due to a URL parsing issue, Requests releases prior to 2.32.4 may leak .netrc credentials to third parties for specific maliciously-crafted URLs. Workarounds For older versions of Requests, use of the .netrc file can be disabled with trustenv=False on your Requests Session docs. References...

PYSEC-2026-1713 OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint

Impact OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that make the web server component become unresponsive. This could be used to effectively run ...

Requests vulnerable to .netrc credentials leak via malicious URLs

ImpactDue to a URL parsing issue, Requests releases prior to 2.32.4 may leak .netrc credentials to third parties for specific maliciously-crafted URLs. WorkaroundsFor older versions of Requests, use of the .netrc file can be disabled with trustenv=False on your Requests Session docs...

GO-2026-5889 Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled in github.com/projectcontour/contour

Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled in github.com/projectcontour/contour...

PYSEC-2026-1080 Aim Uncontrolled Resource Consumption vulnerability

A vulnerability in aimhubio/aim version 3.25.0 allows for a denial of service DoS attack. The issue arises when a large number of tracked metrics are retrieved simultaneously from the Aim web API, causing the web server to become unresponsive. The root cause is the lack of a limit on the number o...

H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint

A vulnerability in the /3/Parse endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an...

PYSEC-2026-1445 H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint

A vulnerability in the /3/Parse endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an...

PYSEC-2026-1457 HyperLPR Denial of Service vulnerability

A vulnerability in szad670401/hyperlpr v3.0 allows for a Denial of Service DoS attack. The server fails to handle excessive characters appended to the end of multipart boundaries, regardless of the character used. This flaw can be exploited by sending malformed multipart requests with arbitrary...

PYSEC-2026-1992 twisted.web has disordered HTTP pipeline response

Summary The HTTP 1.0 and 1.1 server provided by twisted.web could process pipelined HTTP requests out-of-order, possibly resulting in information disclosure. PoC 0. Start a fresh Debian container: sh docker run --workdir /repro --rm -it debian:bookworm-slim 1. Install twisted and its dependencies...

PYSEC-2026-1361 OpaMiddleware does not filter HTTP OPTIONS requests

Summary HTTP OPTIONS requests are always allowed by OpaMiddleware, even when they lack authentication, and are passed through directly to the application. The maintainer uncertain whether this should be classed as a "bug" or "security issue" – but is erring on the side of "security issue" as an...

golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses

A flaw was found in golang.org/x/crypto/ssh. A remote malicious SSH peer can exploit this by sending unsolicited global request responses, which fills an internal buffer and blocks the connection's read loop. This prevents the associated resources from being released, leading to a resource leak p...

RLSA-2026:34109 Important: httpd security, bug fix, and enhancement update

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fixes: httpd: incomplete fix for CVE-2023-38709 CVE-2024-42516 httpd: NULL pointer dereference via specially crafted request CVE-2026-29169 httpd: Apache HTTP Server: Heap-based Buffer...

PYSEC-2026-1419 gradio Server-Side Request Forgery vulnerability

An SSRF Server-Side Request Forgery vulnerability exists in the gradio-app/gradio repository, allowing attackers to scan and identify open ports within an internal network. By manipulating the 'file' parameter in a GET request, an attacker can discern the status of internal ports based on the...

PYSEC-2026-1676 Mobile Security Framework (MobSF) vulnerable to SSRF in firebase database check

Impact What kind of vulnerability is it? Who is impacted? SSRF vulnerability in firebase database check logic. The attacker can cause the server to make a connection to internal-only services within the organization’s infrastructure. When malicious app is uploaded to Static analyzer, it is possib...

PYSEC-2026-1494 Kinto Attachment's attachments can be replaced on read-only records

Impact The attachment file of an existing record can be replaced if the user has "read" permission on one of the parent collection or bucket. And if the "read" permission is given to "system.Everyone" on one of the parent, then the attachment can be replaced on a record using an anonymous request...

PYSEC-2026-1388 fonttools XML External Entity Injection (XXE) Vulnerability

Summary As of fonttools=4.28.2 the subsetting module has a XML External Entity Injection XXE vulnerability which allows an attacker to resolve arbitrary entities when a candidate font OT-SVG fonts, which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the...

PYSEC-2026-1451 User accounts disclosed to unauthenticated actors on the LAN

Summary The login page discloses all active user accounts to any unauthenticated browsing request originating on the Local Area Network. Details Starting the Home Assistant 2023.12 release, the login page returns all currently active user accounts to browsing requests from the Local Area Network...

Sentry vulnerable to incorrect credential validation on OAuth token requests

ImpactAn attacker with sufficient client-side exploits could retrieve a valid access token for another user during the OAuth token exchange due to incorrect credential validation. The client ID must be known and the API application must have already been authorized on the targeted user account...