6.2

CVE-2026-56755: gitea gitea open source git server Improper Access Control

CVSS: 6.2v3.1MediumDeferred
AliasesGHSA-6hm7-3pwj-22rmGO-2026-6037
Published 13-08-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-56755 is a medium (CVSS 6.2) Improper Access Control vulnerability in gitea gitea open source git server. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.4% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.2/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 13-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

3 scores · 3 sources · 2 versions

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

-0.01 pp

From 0.18% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Code.gitea.io1 product
  • gitea< 1.27.0
Gitea1 product
Go1 product
  • gitea.dev< 1.27.0

3 vendors · 3 products

References

8 links