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CVE-2026-12205

Published: Jun 15, 2026Updated: Jun 16, 2026 Sources: CVE List NVDCWE-323
9.1CRITICAL
NVD MITRE
EPSS Score
0.3%
Top 78.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r". Keys used to sign more than once with an affected version should be considered compromised.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-323

Affected Products

TIMLEGGE
aka crypt::dsa, crypt::nacl::sodium
Crypt::DSALibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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References

https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.20/source/lib/Crypt/DSA.pm#L47
metacpan.org
https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/changes
metacpan.org
http://www.openwall.com/lists/oss-security/2026/06/15/4
openwall.com

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