PYSEC-2026-1099 AIOHTTP's unicode processing of header values could cause parsing discrepancies

Summary The Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. Impact If a pure Python version of aiohttp is installed i.e. without the usual C extensions or AIOHTTPNOEXTENSIONS is enabled, then an attacker may be able to execute a request smuggling...

PYSEC-2026-1596 HTTP/HTTPS Traffic Interception Bypass in mad-proxy

A vulnerability in mad-proxy versions = 0.3 allows attackers to bypass HTTP/HTTPS traffic interception rules, potentially exposing sensitive traffic...

PYSEC-2026-1553 Litestar X-Forwarded-For Header Spoofing Vulnerability Enables Rate Limit Evasion

While testing Litestar's RateLimitMiddleware, I discovered that rate limits can be completely bypassed by manipulating the X-Forwarded-For header. This renders IP-based rate limiting ineffective against determined attackers. The Problem Litestar's RateLimitMiddleware uses cachekeyfromrequest to...

PYSEC-2026-2021 vllm API endpoints vulnerable to Denial of Service Attacks

Summary A Denial of Service DoS vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion, potentially leading to a crash or unresponsiveness. The attack does not require authentication, making ...

PYSEC-2026-1104 AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections

Summary The Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. Impact If a pure Python version of aiohttp is installed i.e. without the usual C extensions or AIOHTTPNOEXTENSIONS is enabled, then an attacker may be able to execu...

Tornado vulnerable to excessive logging caused by malformed multipart form data

SummaryWhen Tornado's multipart/form-data parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the...

PYSEC-2026-1379 Flask-AppBuilder open redirect vulnerability using HTTP host injection

Impact Flask-AppBuilder prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redirect by manipulating the Host header in HTTP requests. Patches Flask-AppBuilder 4.6.2 introduced the FABSAFEREDIRECTHOSTS configuration variable, which allows administrators to explicit...

PYSEC-2026-1974 Tornado vulnerable to excessive logging caused by malformed multipart form data

Summary When Tornado's multipart/form-data parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the...

SUSE CVE-2026-9697

Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI socks5:// or socks://. The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servernam...

PYSEC-2026-1543 LiteLLM Has a Leakage of Langfuse API Keys

In berriai/litellm version v1.52.1, an issue in proxyserver.py causes the leakage of Langfuse API keys when an error occurs while parsing team settings. This vulnerability exposes sensitive information, including langfusesecret and langfusepublickey, which can provide full access to the Langfuse...

PYSEC-2026-1630 Mitmweb API Authentication Bypass Using Proxy Server

Impact In mitmweb 11.1.0 and below, a malicious client can use mitmweb's proxy server bound to :8080 by default to access mitmweb's internal API bound to 127.0.0.1:8081 by default. In other words, while the client cannot access the API directly good, they can access the API through the proxy bad...

PYSEC-2026-1613 Synapse allows unsupported content types to lead to memory exhaustion

Impact In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. Patches Synapse 1.120.1 resolves the issue by denying...

PYSEC-2026-1252 Potential access to sensitive URLs via CKAN extensions (SSRF)

Impact There are a number of CKAN plugins, including XLoader, DataPusher, Resource proxy and ckanext-archiver, that work by downloading the contents of local or remote files in order to perform some actions with their contents e.g. pushing to the DataStore, streaming contents or saving a local...

PYSEC-2026-1995 urllib3's Proxy-Authorization request header isn't stripped during cross-origin redirects

When using urllib3's proxy support with ProxyManager, the Proxy-Authorization header is only sent to the configured proxy, as expected. However, when sending HTTP requests without using urllib3's proxy support, it's possible to accidentally configure the Proxy-Authorization header even though it...

New API is vulnerable to CSRF through user email binding

Summary The email and WeChat account binding endpoints used GET requests for state-changing account operations. In deployments where session cookies could be sent on cross-site navigations, an attacker could trigger a logged-in user's browser to bind an attacker-controlled email address or OAuth...

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...

MAL-2026-8905 Malicious code in steelproxymod (RubyGems)

--- -= Per source details. Do not edit below this line.=-...

Malicious code in proxyta4d404a4 (RubyGems)

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PYSEC-2026-1516 Server-Side Request Forgery in langchain-community.retrievers.web_research.WebResearchRetriever

A Server-Side Request Forgery SSRF vulnerability exists in the Web Research Retriever component in langchain-community langchain-community.retrievers.webresearch.WebResearchRetriever. The vulnerability arises because the Web Research Retriever does not restrict requests to remote internet...

PYSEC-2026-1542 litellm passes untrusted data to `eval` function without sanitization

A remote code execution RCE vulnerability exists in the berriai/litellm project due to improper control of the generation of code when using the eval function unsafely in the litellm.getsecret method. Specifically, when the server utilizes Google KMS, untrusted data is passed to the eval function...