CVE-2026-15534
An attacker can exploit a vulnerability in Perl to conduct a denial of service attack.
CSIRTS triage
- What
- A vulnerability in Perl allows attackers to conduct denial of service attacks.
- Who is affected
- All Perl installations are affected; specific versions not stated.
- Urgency
- Medium—denial of service risk; no active exploitation reported.
- Action
- Update Perl to a patched version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[NEW] [medium] Perl: Vulnerability enables denial of servicecert-bund · 2026-08-18
- mediumCVE-2026-15534: Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expressio…msrc · 2026-08-11
- mediumCVE-2026-15534: Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expressio…nvd · 2026-08-09
External references
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[](https://www.csirts.com/cve/CVE-2026-15534)