[NEW] [medium] Perl: Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in Perl to carry out a denial of service attack or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities in Perl can be exploited by remote attackers to cause denial of service or disclose confidential information.
- Who is affected
- Deployments of Perl are affected by these vulnerabilities.
- Urgency
- Remediation is important due to the medium severity of potential impacts.
- Action
- Update to the latest version of Perl.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2309
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-132210.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all scored CVEs.
- Low exploitation riskCVE-2026-574320.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-13221 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-57432 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highCVE-2026-57432: Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-o…msrc
- mediumCVE-2026-13221: Perl versions through 5.43.9 produce silently incorrect regular expression matches when an alt…msrc
- highCVE-2026-57432: Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-o…nvd
- criticalCVE-2026-13221: Perl versions through 5.43.9 produce silently incorrect regular expression matches when an alt…nvd
Recent advisories for Perl
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownCVE-2026-18536: Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP. The …nvd · 2026-08-01
- medium[NEW] [medium] Red Hat Enterprise Linux (perl-Archive-Tar, httplib2): Multiple vulnerabilities allow denial of…cert-bund · 2026-07-31
- highCVE-2026-60075: Date::Manip versions through 6.99 for Perl allow CPU exhaustion via quadratic backtracking in …nvd · 2026-07-30
- highCVE-2026-60074: Date::Manip versions through 6.99 for Perl return corrupted dates via non-ASCII decimal digits…nvd · 2026-07-30
- medium[UPDATE] [medium] Red Hat Enterprise Linux (perl-IO-Compress): Vulnerability allows executing arbitrary progra…cert-bund · 2026-07-30
- medium[UPDATE] [medium] Perl: Vulnerability allows unspecified attackcert-bund · 2026-07-29
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31