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01 Record

CVE-2026-56657

Gitea SSH Key Parser Denial of Service

MediumPUBLISHEDCNA: Gitea
CNA base score6.2 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 Description

Gitea SSH Key Parser Denial of Service

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.17% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 6.5% of scored records. A rank, not a probability.
NVD base score
6.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-08-26.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-13 16:44Z2 MO AGO
Last updated
2026-08-13 18:48Z2 MO AGO
Reserved
2026-07-08
Assigning CNA
Gitea
Record state
PUBLISHED
Severity
Medium (CVSS 6.2)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-284Improper Access ControlPillar
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
e86a76f82603583aa3e54789131038e1b8c05907168d1bcbf91dd76e580ab464

05 Affected products

VendorProductVersionsPlatforms
GiteaGitea Open Source Git Server0 to 1.26.4—

06 References