CVE-2026-91993: Jpom through 2.11.12 Workspace Isolation Bypass via /build/branch-list

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-23
Weakness: CWE-639

Description

Jpom through 2.11.12 fails to validate workspace ownership when resolving repositoryId on the /build/branch-list endpoint, allowing authenticated users to access repositories from other workspaces. Attackers can submit repository identifiers from different workspaces to enumerate repository existence, determine repository type, and execute git ls-remote commands using other workspaces' stored credentials.

Affected products

dromara Jpom: through 2.11.12

References

https://github.com/dromara/Jpom
https://github.com/dromara/Jpom/blob/v2.11.12/modules/server/src/main/java/org/dromara/jpom/controller/build/BuildInfoController.java#L436-L454
https://github.com/dromara/Jpom/issues/115
https://www.vulncheck.com/advisories/jpom-through-2.11.12-workspace-isolation-bypass-via-build-branch-list

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