Dashboard / CVE-2026-49834

CVE-2026-49834

HIGH
MEDIUM Priority: 0.01 BB Relevance: 75/100
Published: 2026-07-17 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: High
A: None

Description

sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1) counts verified witnesses per entry or per validation path rather than per log authority, allowing a single compromised transparency log or CT log to satisfy multi-log threshold requirements and defeat the multi-log policy. This issue is fixed in version 1.2.0.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
sigstore sigstore-go < 1.2.0

References & Advisories (4)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001810
Percentile 7.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00181
2026-10-28
0.00181

Intelligence Sources

nvd ref →

External Links