01 Record
CVE-2026-56726
Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak
MediumPUBLISHEDCNA: GitHub_M
CNA base score5.1 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
02 Description
Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.34% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 27.3% of scored records. A rank, not a probability.
- NVD base score
- 5.1 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Deferred. NVD last modified this record on 2026-09-28.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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
- 2026-09-25 17:01Z1 MO AGO
- Last updated
- 2026-09-25 19:44Z1 MO AGO
- Reserved
- 2026-06-22
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.1)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-862Missing AuthorizationClass
- Data version
- 5.2
- Document digest
- 62d69986df1dc3ce618886fd6db6125d1112aa891e06d70954b2abcccf493a6a
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/zammad/zammad/security/advisories/GHSA-96hh-fmj3-h4hp
- github.comhttps://github.com/zammad/zammad/commit/c767f32c006ff9842152f78e12f355f7f485304f
- github.comhttps://github.com/zammad/zammad/commit/e50ef69beab897317caa5e9490edba33aa1ac978
- github.comhttps://github.com/zammad/zammad/releases/tag/7.0.2