VulnSocial

CVE-2026-12205Disclosure

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-323

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 2 mentions (2026-06-16); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-06-16: 2Mentions · 2026-06-18: 1Patch / Workaround · 2026-06-16: 1Technical Details · 2026-06-16: 2Technical Details · 2026-06-18: 106-1606-18
Signal classification2 categories
Disclosure
266.7%
Patch
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-06-162
Disclosure1Patch1
2026-06-181
Disclosure1
Full discourse3 posts
  • Open Source Security mailing list@oss_security
    Disclosure

    Perl CPAN CVE-2026-12205: Crypt::DSA before 1.21 reused the nonce across signatures, leading to private-key recovery https://www.openwall.com/lists/oss-security/2026/06/15/4 CVE-2026-12087: Socket before 2.041 have an out-of-bounds heap read https://www.openwall.com/lists/oss-security/2026/06/15/10

    Post summary

    The text discloses two new CVEs in Perl CPAN modules, detailing nonce reuse and out‑of‑bounds heap read vulnerabilities, without mentioning exploitation activity or patches.

    10010157
    4.6K followersView on X
  • NerdieNews@NewsNerdie
    Patch

    ⚠️ Crypt::DSA (CVE-2026-12205) reused nonces across signatures, letting attackers recover private keys and compromise cryptographic systems. Perl users: upgrade to v1.21 immediately to avoid full key exposure. #NerdieNews #CyberSecurity #Ransomware https://t.co/SvPcivnX0l

    Post summary

    CVE-2026-12205 involves nonce reuse in Crypt::DSA that permits private key recovery; users are urged to upgrade to v1.21 to mitigate the risk.

    0000033
    68 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-12205 Private Key Recovery via Nonce Reuse in Crypt::DSA Before 1.21 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12205

    Post summary

    The text announces CVE-2026-12205, describing a nonce reuse flaw in Crypt::DSA that enables private key recovery, but provides no PoC, exploit, or patch details.

    0000051
    4.0K followersView on X

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