CVE-2026-13576
Last modified
CVE-2026-13576 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes. Passwords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing. An attacker who obtains the user table can recover passwords by fast offline guessing.. EPSS estimates a 0.10% chance of exploitation in the next 30 days.
Description
CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes. Passwords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing. An attacker who obtains the user table can recover passwords by fast offline guessing.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | — | < 0.62.0 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-13576?
How severe is CVE-2026-13576?
How do I fix CVE-2026-13576?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-13570A vulnerability was detected in SourceCodester Inventory Man…3.5
- CVE-2026-13571A flaw has been found in SourceCodester Simple Food Ordering…5.3
- CVE-2026-13572A vulnerability has been found in itsourcecode Hospital Mana…6.3
- CVE-2026-13573A vulnerability was found in llvm llvm-project up to 22.1.6.…3.3
- CVE-2026-13574A vulnerability was determined in llvm llvm-project up to 22…3.3
- CVE-2026-13575HTTP::Session versions before 0.54 for Perl allow memcached …
- CVE-2026-13577Dancer2 versions before 2.2.0 for Perl generate insecure ses…8.2
- CVE-2026-13578A security flaw has been discovered in itsourcecode Hospital…6.3
- CVE-2026-13579A weakness has been identified in itsourcecode Hospital Mana…6.3
- CVE-2026-1358Airleader Master versions 6.381 and prior allow for file upl…9.8
- CVE-2026-13580A security vulnerability has been detected in Edimax EW-7478…8.8
- CVE-2026-13581A vulnerability was detected in Edimax EW-7478APC 1.04. This…6.3
Are you affected by CVE-2026-13576?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST