CVE-2026-118237
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
61/100
Published: 2026-11-03
Modified: 2026-11-06
First seen: 2026-11-03
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
AT:
None
VC:
Low
VI:
None
VA:
None
Description
An out-of-bounds read vulnerability was identified in GitHub Enterprise Server in the Git service (babeld). When proving possession of a host key, babeld's SSH implementation sized the session identifier by the current digest length rather than its own. An attacker with an account and SSH access could re-key to an algorithm with a longer hash, causing adjacent process memory to be signed and returned to the client, where a limited amount of it may be recoverable. This vulnerability affected all releases prior to 3.23 and was fixed in versions 3.22.3, 3.21.8, 3.20.10, and 3.19.14. This vulnerability was reported via the GitHub Bug Bounty program.
Weakness Classification (1)
Affected Software (8)
| Vendor | Product | Version |
|---|---|---|
| GitHub | Enterprise Server | 3.19.0 < 3.19.* |
| GitHub | Enterprise Server | 3.20.0 < 3.20.* |
| GitHub | Enterprise Server | 3.21.0 < 3.21.* |
| GitHub | Enterprise Server | 3.22.0 < 3.22.* |
| GitHub | Enterprise Server | 3.19.0 < 3.19.* |
| GitHub | Enterprise Server | 3.20.0 < 3.20.* |
| GitHub | Enterprise Server | 3.21.0 < 3.21.* |
| GitHub | Enterprise Server | 3.22.0 < 3.22.* |
References & Advisories (4)
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