CVE-2026-22772
Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass
5.8CVSSMEDIUM
Description
Fulcio is vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:CScopeChanged
Impact
C:LConfidentialityLow
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.
Exploitability
Official Patch Available
MITRE ATT&CK
2 techniques Command and Control
Initial Access
References
https://github.com/sigstore/fulcio/security/advisories/GHSA-59jp-pj84-45mr
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-22772
nvd.nist.gov
https://github.com/sigstore/fulcio/commit/eaae2f2be56df9dea5f9b439ec81bedae4c0978d
github.com
and 1 more references View all →
Timeline
Published
Jan 12, 2026
Last Updated
Mar 5, 2026
Unlock Complete Vulnerability Intelligence
Get the full picture for CVE-2026-22772 and every CVE in our database. Create a free account — no credit card required.
Create Free AccountPlain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows