What’s Vulnerable › Vulnerabilities

CVE-2026-8507: Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl have out-of-bounds (OOB) write flaws

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-17 · updated 2026-10-26
• Weakness: CWE-787

Description

Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl have out-of-bounds (OOB) write flaws. When parsing a PKCS12 file, with a >= 1 GiB OCTET STRING (or BIT STRING) attribute on a SAFEBAG, via info() or info_as_hash(), a heap out-of-bounds write would be triggered with remote-code-execution potential (RCE) due to a signed integer overflow in the size calculation passed to Renew().

Affected products

• JONASBN Crypt::OpenSSL::PKCS12: through 1.94

References

• https://github.com/dsully/perl-crypt-openssl-pkcs12/commit/b9d0469c6d8f5b5c6c2a45a3d0647a532b749397.patch
• https://github.com/dsully/perl-crypt-openssl-pkcs12/issues/55
• https://github.com/dsully/perl-crypt-openssl-pkcs12/issues/56
• https://metacpan.org/release/JONASBN/Crypt-OpenSSL-PKCS12-1.95/view/Changes.md
• http://www.openwall.com/lists/oss-security/2026/05/17/5

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