CVE-2026-13048
Arbitrary code execution via .po localization files loaded by Data::MuForm::Localizer
Is CVE-2026-13048 being exploited?
Not confirmed. CVE-2026-13048 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.47% probability of exploitation in the next 30 days.
How severe is CVE-2026-13048?
CVE-2026-13048 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-13048?
Yes. A fix has been recorded for CVE-2026-13048. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13048 affect?
CVE-2026-13048 affects Data::MuForm::Localizer <= 0.05, Perl web applications using Data::MuForm::Localizer, Apps loading .po files from user-controlled paths. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-13048?
Update/patch module; sanitize language input; restrict .po paths; block untrusted .po files
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution as the application user via path traversal and eval of 'Plural-Forms' header in loaded .po files.
Patch when possible