What’s Vulnerable › Vulnerabilities

CVE-2026-56755: Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload

• Severity: medium (CVSS 6.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-08-26
• Weakness: CWE-284

Description

Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload

Affected products

• Gitea Open Source Git Server: through 1.26.4

References

• https://blog.gitea.com/gitea-1.27.0-is-released/
• https://github.com/go-gitea/gitea/releases/tag/v1.27.0
• https://github.com/go-gitea/gitea/security/advisories/GHSA-6hm7-3pwj-22rm

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