n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path

Impact The Git node's clone operation matched the destination path against the default N8NBLOCKFILEPATTERNS expression, which was written so that a crafted path caused catastrophic backtracking. Evaluation runs synchronously in the main n8n process, so an authenticated user could freeze the...

GHSA-J535-V25Q-VX3Q n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path

Impact The Git node's clone operation matched the destination path against the default N8NBLOCKFILEPATTERNS expression, which was written so that a crafted path caused catastrophic backtracking. Evaluation runs synchronously in the main n8n process, so an authenticated user could freeze the...

vLLM: ReDoS via structured_outputs.regex in the lm-format-enforcer backend (no compile timeout) — missed sibling of GHSA-rwxx-mrjm-wc2m

SummaryThe fix for GHSA-rwxx-mrjm-wc2m "ReDoS via structuredoutputs.regex compiled without timeout" wrapped the regex compile in the xgrammar and outlines backends with compileregexwithtimeout and, for outlines, validateregexisbuildable. The lm-format-enforcer backend was left unguarded: it...

PYSEC-2026-3933 vLLM: ReDoS via structured_outputs.regex in the lm-format-enforcer backend (no compile timeout) — missed sibling of GHSA-rwxx-mrjm-wc2m

Summary The fix for GHSA-rwxx-mrjm-wc2m "ReDoS via structuredoutputs.regex compiled without timeout" wrapped the regex compile in the xgrammar and outlines backends with compileregexwithtimeout and, for outlines, validateregexisbuildable. The lm-format-enforcer backend was left unguarded: it...

Protego has exponential backtracking ReDoS in robots.txt URL wildcard matching

Problem descriptionProtego constructs regular expressions to match URLs against robots.txt Allow: and Disallow: directives, see protego.urlpattern.URLPattern.preparepatternforregex. Every in the directive value is translated into a lazy .? regex piece, thus a specially crafted directive value wit...

PYSEC-2026-3906 Protego has exponential backtracking ReDoS in robots.txt URL wildcard matching

Problem description Protego constructs regular expressions to match URLs against robots.txt Allow: and Disallow: directives, see protego.urlpattern.URLPattern.preparepatternforregex. Every in the directive value is translated into a lazy .? regex piece, thus a specially crafted directive value wi...

The vulnerability of the Actor.name_email_regex() function in the Python library for interacting with Git repositories in GitPython allows a malicious actor to trigger a denial-of-service attack.

The vulnerability of the Actor.nameemailregex function in the Python library for interacting with Git repositories in GitPython is related to the use of a regular expression with inefficient computational complexity. Exploiting this vulnerability could allow a malicious actor to cause service...

Regular Expression Denial of Service (ReDoS)

Overview GitPython is a python library used to interact with Git repositories Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the Actor.fromstring parsing in git/util.py. An attacker can exhaust CPU and stall commit metadata access by supplying a...

Duplicate Advisory: Denial of Service via catastrophic backtracking (ReDoS) in Actor.name_email_regex — commit author/committer field parsing

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-g5vv-9gxw-82hx. This link is maintained to preserve external references. Original Description GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that...

CVE-2026-87819

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

PYSEC-2026-3984

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

PYSEC-2026-3984

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

DEBIAN-CVE-2026-87819

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

UBUNTU-CVE-2026-87819

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

CVE-2026-87819

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

CVE-2026-87819 GitPython before 3.1.60 Denial of Service via ReDoS

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

CVE-2026-87819 GitPython before 3.1.60 Denial of Service via ReDoS

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

CVE-2026-87819 GitPython before 3.1.60 Denial of Service via ReDoS

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.nameemailregex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic...

CVE-2026-87819

GitPython before 3.1.60 is vulnerable to a regular expression denial of service (ReDoS) in the Actor.name_email_regex pattern used to parse commit author and committer fields. An attacker can craft a commit object with a malformed author field containing an unterminated angle bracket , triggering...

CVE-2026-86081 n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Git node clone operation matched an attacker-controlled destination path against the default N8NBLOCKFILEPATTERNS regular expression. The pattern ^./.git/.$ allowed catastrophic backtracking and ran...