CVE-2025-66506High
ANC
ANC
Anchore Vulnerability Database overrides
Supplementary feed layered on top of upstream sources. Anchore maintainers publish override records to suppress known false positives and fill CPE/PURL gaps that would otherwise cause Grype and similar scanners to mis-report a system.
Region
US
Updates
6 ч
License
Apache-2.0
Curated corrections to the Anchore/Grype vulnerability database: false-positive suppressions, missing CPE mappings and distro-specific backport fixes.
https://github.com/anchore/grype-db →Share link
Anyone with the link can open this vulnerability.
Fulcio is a free-to-use certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.3, …
CVSS
7.5
High
EPSS
0.00
p13
Published
2025-01-01
Updated
2025-01-01
Description
Fulcio is a free-to-use certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.3, function identity.extractIssuerURL splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request with an (invalid) OIDC identity token in the payload containing many period characters, a call to extractIssuerURL incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This vulnerability is fixed in 1.8.3.
Tags · CWE
Pre-auth
CWE-405
CWE-405ClassIncomplete
Asymmetric Resource Consumption (Amplification)
The product does not properly control situations in which an adversary can cause the product to consume or produce excessive resources without requiring the adversary to invest equivalent work or otherwise prove authorization, i.e., the adversary's influence is "asymmetric."
https://cwe.mitre.org/data/definitions/405.html →Open in CWE collection →Affected products
Fulcio < 1.8.3
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Timeline
2025-01-01
Published
2025-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: N
None (N)
Integrity Impact
I: N
None (N)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.000 · p13
Known exploited (KEV)
No
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected software
| Product | Vendor | Status |
|---|---|---|
| Tracked | ||
| golang-github-sigstore-fulcio | Tracked | |
| golang-github-sigstore-fulcio | Tracked | |
| golang-github-sigstore-fulcio | Tracked | |
| fulcio | * | Tracked |
Source databases
ANC
ANC
Anchore Vulnerability Database overrides
Supplementary feed layered on top of upstream sources. Anchore maintainers publish override records to suppress known false positives and fill CPE/PURL gaps that would otherwise cause Grype and similar scanners to mis-report a system.
Region
US
Updates
6 ч
License
Apache-2.0
Curated corrections to the Anchore/Grype vulnerability database: false-positive suppressions, missing CPE mappings and distro-specific backport fixes.
https://github.com/anchore/grype-db →DEB
DEB
Debian Security Advisories (DSA)
DSAs are published by the Debian Security Team for issues affecting the stable distribution. The downstream tracker (security-tracker.debian.org) additionally maps every CVE to its package-level status across all supported suites.
Region
Intl.
Updates
1 ч
License
Public Domain
Advisories covering the Debian stable and oldstable releases. Ship notes include the exact .deb version that remediates each issue.
https://www.debian.org/security/ →CVE
CVE
National Vulnerability Database
NVD is the U.S. government repository of standards-based vulnerability management data, built on top of the MITRE CVE list. Every record includes CPE applicability statements, CVSS v2 and v3.x base scores, CWE mappings and cross-references to advisories.
Region
US
Updates
15 min
License
Public Domain
Comprehensive catalog of publicly disclosed vulnerabilities with CPE matches, CVSS scoring and reference URLs. De-facto standard for cross-vendor correlation.
https://nvd.nist.gov →UBU
UBU
Ubuntu Security Notices (USN)
USNs are authoritative for Ubuntu systems. The CVE Tracker links each vulnerability to its per-release status (needed, released, not-affected) and to the exact Launchpad bug where the fix is integrated.
Region
Intl.
Updates
1 ч
License
CC BY-SA 3.0
Security notices for Ubuntu LTS and interim releases, covering main, universe and (via Pro) ESM-extended packages.
https://ubuntu.com/security/notices →External references
https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a@https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpwhttps://www.cve.org/CVERecord?id=CVE-2025-66506@https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a@https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw