CVE-2026-78415 IBM Sterling Secure Proxy is vulnerable to multiple issues
Remote authenticated attackers can perform UI spoofing and phishing attacks via improper neutralization of user-supplied HTML markup in IBM Sterling Secure Proxy.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78415?
CVE-2026-78415 is a medium-severity cross-site scripting vulnerability in IBM Sterling Secure Proxy, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Sterling Secure Proxy 6.2.0.0 through 6.2.1.2 could allow a remote authenticated attacker to perform UI spoofing and phishing attacks due to improper neutralization of user-supplied HTML markup.
Weakness: CWE-79
Which versions are affected by CVE-2026-78415?
How do I fix CVE-2026-78415?
No fix has been published for CVE-2026-78415 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-78415 being exploited?
There is no known exploitation of CVE-2026-78415 in the wild and no public exploit code.
Sources
Also known as GHSA-4m7p-rm8x-7p4r.