CVE-2026-123558

8.7 highEPSS 0.3%

High (8.7) in zcashfoundation zebra. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

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Severity
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Affected
Versions
References
Your exposure

Zebra zebrad before 7.0.0 contains a denial of service vulnerability that allows a malicious peer to stall checkpoint sync by cancelling the verifier rewind after a failed commit. Attackers can serve a forged block with altered authorizing data plus a restart-triggering block, leaving the verifier rejecting honest blocks until restart.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.3% estimated probability of exploitation activity in the next 30 days; 28th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC): Exploitation: none · Automatable: yes · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE: CWE-460 Improper Cleanup on Thrown Exception
OWASP Top 10: A10:2025 Mishandling of Exceptional Conditions
Published: 2026-11-08 02:16 UTC
Modified: 2026-11-09 14:17 UTC
NVD analysis: Deferred: the NVD does not plan to analyze it
Record from: the NVD, synced 2026-11-09 14:47 UTC

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Affected

zcashfoundation:zebra

Versions

From the CNA's record in the CVE List.

Product	Affected
ZcashFoundation zebra	before 7.0.0

References

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