CVE-2026-17524
Directory traversal in zip-lib allows extraction outside target folder.
Is CVE-2026-17524 being exploited?
Not confirmed. CVE-2026-17524 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 0.78% probability of exploitation in the next 30 days.
How severe is CVE-2026-17524?
CVE-2026-17524 is rated High with a CVSS score of 8.7. 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-2026-17524?
Yes. A fix has been recorded for CVE-2026-17524. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-17524 affect?
CVE-2026-17524 affects zip-lib < 1.1.0, Applications using zip-lib for archive extraction. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-17524?
Upgrade zip-lib to >=1.1.0 and validate/sanitize archive paths.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Directory traversal via crafted archives lets attackers write/overwrite files outside extraction dir, enabling data overwrite or possible code execution.
Immediate action required
- affected< 1.1.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.