CVE•Published 2026-07-17•Modified 2026-07-30•0 articles on news•5 live references•NVD data

CVE-2026-49834Sigstore · Sigstore-go

Vulnerability data via NVD (ingested)

CVSS v3.1

5.9

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 98% of all CVEs

Weaknesses (CWE)

CWE-347Improper Verification of Cryptographic Signature

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.

Timeline

Published 2026-07-17

Modified 2026-07-30

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-49834

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Sigstore Sigstore-go"

All exposed Sigstore Sigstore-go instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Sigstore-go"

HTTP body or banner mentions "Sigstore-go" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-49834