01 Record
CVE-2026-52737
ZEBRA: Sync restart poisoning from single unauthenticated peer via above-lookahead block
MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
02 Description
ZEBRA: Sync restart poisoning from single unauthenticated peer via above-lookahead block
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.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.26% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 17.8% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVD analysis status
- Deferred. NVD last modified this record on 2026-09-09.
- 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
- 2026-08-18 19:19Z2 MO AGO
- Last updated
- 2026-08-18 19:33Z2 MO AGO
- Reserved
- 2026-06-08
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-345Insufficient Verification of Data AuthenticityClass
- Data version
- 5.2
- Document digest
- 8803174af6384e5cadf7f5765bea366b0f6414cfff3f700ea34bafa741caab7c
05 Affected products
06 References
- github.comhttps://github.com/ZcashFoundation/zebra/security/advisories/GHSA-gvjc-3w7c-92jx
- github.comhttps://github.com/ZcashFoundation/zebra/pull/10647
- github.comhttps://github.com/ZcashFoundation/zebra/commit/1440b43ca7df59aca948090d45117557b217a6cd
- github.comhttps://github.com/ZcashFoundation/zebra/commit/bc64dfe45746a86d14546a0a5a766387dd5a2942
- github.comhttps://github.com/ZcashFoundation/zebra/releases/tag/v4.5.0