Security readout for executives and security teams
Plain-English summary
Tuleap allowed authenticated users to create Git branches through its REST API even when fine-grained repository permissions should have blocked them. This can undermine change-control expectations in affected repositories, but the reported impact is limited to low confidentiality and integrity impact with no availability impact.
Executive priority
Treat this as a moderate governance and integrity risk for Tuleap-hosted development environments. It is not described as remotely exploitable without credentials, but affected systems should be upgraded promptly because the vendor states there is no workaround.
Technical view
CVE-2022-31128 is a CWE-862 missing authorization check in Tuleap Git branch creation. The REST endpoint for branch creation did not enforce fine-grained repository permissions, allowing low-privileged authenticated users to create branches despite repository policy. Fixed versions are Tuleap Community Edition 13.10.99.82 and Enterprise Edition 13.10-3.
Likely exposure
Exposure is limited to organizations running Tuleap versions at or after 13.9.99.110 and before Community 13.10.99.82, or affected Enterprise builds before 13.10-3, with Git repositories using fine-grained permissions and REST API access by authenticated users.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Abuse requires a valid Tuleap account and access to the REST API. The practical risk is unauthorized branch creation, which may disrupt repository governance or enable misleading development activity.
Researcher notes
Focus validation on authorization enforcement for branch creation under fine-grained Git permissions. The available sources identify the vulnerable behavior and fixed versions, but do not provide evidence of exploitation in the wild or broader product impact beyond Tuleap Git REST branch creation.
Mitigation direction
- Upgrade Tuleap Community Edition to 13.10.99.82 or later.
- Upgrade Tuleap Enterprise Edition to 13.10-3 or later.
- Prioritize repositories using fine-grained Git permissions.
- Consult Tuleap guidance if immediate upgrade is not possible; sources state no known workaround.
- Monitor branch creation activity until all affected instances are patched.
Validation and detection
- Inventory Tuleap versions and editions across hosted environments.
- Identify Git repositories using fine-grained permissions.
- Review audit logs for unexpected branch creation by low-privileged users.
- Confirm patched systems run Community 13.10.99.82 or Enterprise 13.10-3 or later.
- Verify change-management owners understand the unauthorized branch-creation impact.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-31128 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Enalean/tuleap/security/advisories/GHSA-2p49-vgcx-5w79CVE reference · x_refsource_CONFIRM
- https://github.com/Enalean/tuleap/commit/58ecb1dee1c46075d3e089980301ebfbe0bafd33CVE reference · x_refsource_MISC
- https://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=58ecb1dee1c46075d3e089980301ebfbe0bafd33CVE reference · x_refsource_MISC
- https://tuleap.net/plugins/tracker/?aid=27538CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.