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VulnerabilityPublished

CVE-2026-78415: IBM Sterling Secure Proxy · Cross-site Scripting

Affects IBM Sterling Secure ProxySource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMSterling Secure ProxyAffected
  • >=6.2.0.0 <=6.2.1.2
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:ibm:sterling_secure_proxy:6.2.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:sterling_secure_proxy:6.2.1.2:*:*:*:*:*:*:*

AI-suggested

Until an official fix is available, limit access to trusted users and monitor for suspicious activity related to UI spoofing or phishing attempts within the affected versions.

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.

References

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