CVE-2015-1431

Cross-site scripting (XSS) vulnerability in includes/startup.php in phpBB before 3.0.13 allows remote attackers to inject arbitrary web script or HTML via vectors related to "Relative Path Overwrite."

Published: 2015-02-10 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-1431 is rated Moderate Risk (41.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.63%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-1431

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 0.43% 0.63% +0.20%
2 2026-03-01 0.63% 0.43% -0.20%
3 2026-02-04 — 0.63% —

Full EPSS history (35 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-1431

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2015-1431

OS Trackers for CVE-2015-1431

vendor priority summary link
gentoo normal CVE-2015-1431: 1 GLSA(s) (201701-25), 1 atom(s) (www-apps/phpBB); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-1431
ubuntu medium CVE-2015-1431 medium priority: Ubuntu including 1 source packages (phpbb3), 14 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 6, ignored 3, not-affected 3, released 2. https://ubuntu.com/security/CVE-2015-1431

Affected software / configurations for CVE-2015-1431

Vendor Product Version Raw CPE
phpbb phpbb <= 3.0.12 cpe:2.3:a:phpbb:phpbb:*:*:*:*:*:*:*:*

References for CVE-2015-1431

cvelogic Threat Intelligence