CVE-2026-27771
HIGH 8.2 PoC AVAILABLEGitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.
LIKELY TARGET
40.7% modeled chance of exploitation in the next 30 days (99th percentile) · public exploit code available. Prioritize remediation.
Exploitation likelihood
40.7%chance of exploitation in 30 days · 99th percentile
○ In CISA KEV
● Public exploit / PoC
Impact if exploited
8.2CVSS 3.0 · HIGH
- ConfidentialityHigh
- IntegrityLow
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- nuclei Nuclei detection template
- github-search Search GitHub for public PoC repos
Test against your own equipment
nuclei -id CVE-2026-27771 -u https://TARGETDetection template — non-destructive check that a target is affected.curl -s https://vulnpedia.com/cve/CVE-2026-27771/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-27771/poc.json
Weakness (CWE)
- CWE-862: Missing Authorization
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
All CVSS metrics
- HIGH 8.2 v3.0 · CNA Primary
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N - HIGH 8.2 v3.0 · NVD Secondary
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N