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CVE-2012-4465: Heap-based buffer overflow in the substr function in parsing.c in cgit 0.9.0.3 and earlier allows remote authe

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MEDIUM 6.5UPGRADE

CVE-2012-4465 is a medium-severity flaw (CVSS 6.5) affecting cgit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in the substr function in parsing.c in cgit 0.9.0.3 and earlier allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via an empty username in the "Author" field in a commit.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
EPSS exploit chance3.4% (top 11%)
CISA exploited listNo
WeaknessCWE-119
Published2012-10-10
Last modified2026-06-16
Publisher (CNA): Red Hat, Inc. · Vendor: lars hjemli

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

lars hjemli cgit UPGRADE
Affected: <= 0.9.0.3 · 0.1 · 0.2 · 0.3 · 0.4 · 0.5 · 0.6 · 0.6.1
Fixed in: newer than 0.9.0.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy cgit || rpm -q cgit || cgit --version
2. UPGRADE to newer than 0.9.0.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cgit
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cgit
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-4465?

cgit: upgrade to newer than 0.9.0.3. Exact commands for each OS are on this page.

Is CVE-2012-4465 being exploited?

CVE-2012-4465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-4465 affect?

CVE-2012-4465 affects cgit. Severity is medium (CVSS 6.5). Heap-based buffer overflow in the substr function in parsing.c in cgit 0.9.0.3 and earlier allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via an empty username in the "Author" fiel

How urgent is CVE-2012-4465?

Priority 45/100. No elevated risk signals yet.

Related CVEs

References

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