CVE-2026-23949
Zip Slip path traversal in jaraco.context tarball() enabling RCE.
Is CVE-2026-23949 being exploited?
Not confirmed. CVE-2026-23949 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 0.56% probability of exploitation in the next 30 days.
How severe is CVE-2026-23949?
CVE-2026-23949 is rated High with a CVSS score of 8.6. 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-2026-23949?
Yes. A fix has been recorded for CVE-2026-23949. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-23949 affect?
CVE-2026-23949 affects jaraco.context 5.2.0 - 6.0.x. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-23949?
Upgrade to jaraco.context 6.1.0+.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via tar extraction; writes arbitrary files outside target dir.
Patch when possible
- affected>= 5.2.0 and < 6.1.0
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.