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Vulnerability record · CVE-2026-43935 · published 26 May 2026

CVE-2026-43935: Improper input validation vulnerability

e107 is a content management system (CMS). Prior to 2.3.4, a Host Header Injection vulnerability in the password reset page allows attackers to manipulate the Host header to generate password reset links pointing to attacker-controlled domains. This can lead to phishing attacks, account takeover, or other security risks. The severity is high, as the vulnerability affects a critical function related to user authentication. This vulnerability is fixed in 2.3.4.

8.1 CVSS 3.1 High EPSS 0.55% · top 56.4% CWE-20 · Improper input validationCWE-807 · CWE-807 Deferred
8.1CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
24 Jul 2026Last modified by NVD

Description

e107 is a content management system (CMS). Prior to 2.3.4, a Host Header Injection vulnerability in the password reset page allows attackers to manipulate the Host header to generate password reset links pointing to attacker-controlled domains. This can lead to phishing attacks, account takeover, or other security risks. The severity is high, as the vulnerability affects a critical function related to user authentication. This vulnerability is fixed in 2.3.4.

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

References

LinkTags
https://github.com/e107inc/e107/commit/04511f9f1d6e97c31ba7cc5bf7f1f9a19d221db6
https://github.com/e107inc/e107/commit/b0dee8234e273debbf7a8ae054de464f1008f357
https://github.com/e107inc/e107/commit/c4f9f71b0fd695545d0f09e2277b6f70ff4660fc
https://github.com/e107inc/e107/security/advisories/GHSA-7pmw-jwvr-cq2x
https://github.com/e107inc/e107/security/advisories/GHSA-7pmw-jwvr-cq2x

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Source: NIST National Vulnerability Database (record CVE-2026-43935), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.