Widely used Spring Cloud Config Server; path traversal allows reading arbitrary local files, impacting many enterprises.
CVE-2026-22739
Path traversal in Spring Cloud Config Server enables reading arbitrary local files
Is CVE-2026-22739 being exploited?
Not confirmed. CVE-2026-22739 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 1.2% probability of exploitation in the next 30 days.
How severe is CVE-2026-22739?
CVE-2026-22739 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-2026-22739?
Yes. A fix has been recorded for CVE-2026-22739. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-22739 affect?
CVE-2026-22739 affects Spring Cloud Config Server (native filesystem backend) - affected versions: 3.1.x < 3.1.13; 4.1.x < 4.1.9; 4.2.x < 4.2.3; 4.3.x < 4.3.2; 5.0.x < 5.0.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22739?
Upgrade to fixed versions: 3.1.13+, 4.1.9+, 4.2.3+, 4.3.2+, 5.0.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary local file read via crafted profile param; may expose sensitive configs or system files
Patch when possible
- affected>= 3.1.x and < 3.1.13
- affected>= 4.1.x and < 4.1.9
- affected>= 4.2.x and < 4.2.3
- affected>= 4.3.x and < 4.3.2
- affected>= 5.0.x and < 5.0.2
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.