CVE-2026-101029

MEDIUM 4.3

Published 2026-10-06 · Last modified 2026-10-07

Gitea's repository migration and pull mirror egress checks could be bypassed with a hostname that returns multiple DNS answers, because the address that was validated was not necessarily the address Git later connected to. A low-privileged user who can create migrations or mirrors could direct the server to internal services, reading from and writing to reachable internal Git or HTTP endpoints. Content from internal responses could additionally be disclosed through migration and mirror error messages.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 5th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

4.3CVSS 3.1 · MEDIUM

ConfidentialityLow
IntegrityNone
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
⚠Privileges: Requires a low-privilege account
✓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

reference https://github.com/go-gitea/gitea/security/advisories/GHSA-6g2h-xpg3-rm48
github-search Search GitHub for public PoC repos

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-101029/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-2026-101029/poc.json

Affected

Vendors Gitea

Products Gitea

Weakness (CWE)

CWE-209: : Generation of Error Message Containing Sensitive Information
CWE-367: : Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-918: : Server-Side Request Forgery (SSRF)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Known Affected Software Configurations

Vendor	Product	Version range
Gitea	Gitea	< 28.0.0

All CVSS metrics

MEDIUM 4.3 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
MEDIUM 4.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

Exploits & PoC

https://github.com/go-gitea/gitea/security/advisories/GHSA-6g2h-xpg3-rm48 vendor-advisoryExploitMitigationVendor Advisory

Patches & mitigations

https://github.com/go-gitea/gitea/pull/39010 patchPatchIssue Tracking
https://github.com/go-gitea/gitea/pull/39426 patchPatchIssue Tracking
https://blog.gitea.com/release-of-28.0.0/ release-notesRelease Notes
https://github.com/go-gitea/gitea/releases/tag/v28.0.0 release-notesRelease Notes

Sources: NVD · CVE.org · EPSS