What is CVE-2015-8757?

CVE-2015-8757 is a medium-severity vulnerability in TYPO3, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-01-08.

How severe is CVE-2015-8757?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in TYPO3

CVE-2015-8757

Cross-site scripting (XSS) vulnerability in the Extension Manager in TYPO3 6.2.x before 6.2.16 and 7.x before 7.6.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to extension data during an extension installation.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2016-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

TYPO3 — versions 6.2.0, 6.2.1, 6.2.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2015-010/ (Vendor Advisory)
www.securityfocus.com/bid/79254 (vdb-entry)
www.securitytracker.com/id/1034482 (vdb-entry)

Frequently asked questions

What is CVE-2015-8757?: CVE-2015-8757 is a medium-severity vulnerability in TYPO3, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-01-08.
How severe is CVE-2015-8757?: Medium severity. CVSS v3 base score is 6.1 out of 10.