Quick answers
- Is CVE-2026-15435 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-15435 being exploited in the wild.
- How severe is CVE-2026-15435?
- Critical severity, with a CVSS score of 9.8, published 30 July 2026.
- Which products and versions are affected?
- IBM App Connect Enterprise 13.0.1.0 - 13.0.7.2, 12.0.1.0 - 12.0.12.27.
- Is there a fix for CVE-2026-15435?
- A patch was published on 2026-07-30: Fixes released in versions 13.0.8.0 and 12.0.12.28. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-15435 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-15435?
- Check whether you run IBM App Connect Enterprise at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A path traversal vulnerability (CWE-22) exists in IBM App Connect Enterprise versions 12.0 and 13.0. The flaw is caused by improper validation of user-supplied input in URL requests. A remote, unauthenticated attacker can send a specially crafted URL containing 'dot dot' sequences (/../) to bypass directory restrictions. This allows the attacker to write arbitrary files to the underlying operating system, potentially leading to remote code execution. IBM has released fix packs 13.0.8.0 and 12.0.12.28 to address this issue.
Affected products
- IBM App Connect Enterprise 13.0.1.0 - 13.0.7.2, 12.0.1.0 - 12.0.12.27
Timeline
- 2026-07-30: disclosed: Initial publication of the security bulletin by IBM.
- 2026-07-30: patched: Fixes released in versions 13.0.8.0 and 12.0.12.28.