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TI-2026-12293 Aliases CVE-2026-14570GHSA-v6rc-95xw-8xp5

Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from…

Priority LOW 39CWE-330Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery. "Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values." An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack. Keys used to sign with an affected version should be considered compromised and new keys should be generated.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00508 43rd percentileScored 2026-11-07
Fix Fixed Crypt::DSA (TIMLEGGE): 1.22

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TIMLEGGECrypt::DSAbefore 1.221.22Patch availableCNA
  • Crypt::DSA VendorTIMLEGGE Affected before 1.22 Fixed in 1.22 Patch available CNA

Remediation

  • Fix · CNA Crypt::DSA (TIMLEGGE) Fixed in 1.22

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-14570
  2. 2026-10-03 Alias added: GHSA-v6rc-95xw-8xp5

References

Other 3

  • TI-2026-23735 Integer overflow in TIMLEGGE Crypt::NaCl::Sodium CVSS 3.1CRITICAL 9.8
  • TI-2020-18981 IO::Compress::Brotli versions prior to 0.007 for Perl have an integer overflow in the bundled Brotli C library CVSS 3.1CRITICAL 9.8
  • TI-2026-14905 Improper signature verification in TIMLEGGE Net::SAML2 CVSS 3.1CRITICAL 9.8
  • TI-2026-08239 XML::Sig versions before 0.71 for Perl allow XPath injection in ID lookup CVSS 3.1CRITICAL 9.1
  • TI-2026-10497 Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to… CVSS 3.1CRITICAL 9.1
  • TI-2026-08334 Improper signature verification in TIMLEGGE XML::Sig CVSS 3.1CRITICAL 9.1
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences