CVE-2026-25688

Description

Improper Neutralization of Alternate XSS Syntax vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. AI-generated response content was rendered in the browser without proper sanitization, allowing malicious scripts to be executed when the content was viewed. Users are recommended to upgrade to version 2.0.1, which fixes the issue.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0041

Probability of exploitation

0.33%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-87 CWE-87

Affected Products

Vendor	Product	Versions
apache	answer	< 2.0.1

References

Advisories & Patches

https://lists.apache.org/thread/x42joj43rqb38ms5q60f7bgq3qbo7t5q

Other References

http://www.openwall.com/lists/oss-security/2026/06/09/7

Frequently Asked Questions

What is CVE-2026-25688? +

Improper Neutralization of Alternate XSS Syntax vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. AI-generated response content was rendered in the browser without proper sanitization, allowing malicious scripts to be executed when the content was viewed. Users are recommended to upgrade to version 2.0.1, which fixes the issue. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-25688? +

CVE-2026-25688 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0041, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-25688? +

CVE-2026-25688 affects products from apache, specifically: answer. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-25688? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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