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CVE-2015-5956

13
FAUCET Score

CVE-2015-5956 describes a cross-site scripting (XSS) vulnerability in TYPO3 versions 6.x before 6.2.15, 7.x before 7.4.0, and 4.5.40, allowing authenticated attackers to bypass XSS filters using base64 encoded data URIs in specific URL parameters. This vulnerability has a CVSS score of 3.5 (medium severity), indicating a network-based attack with medium complexity requiring authentication, resulting in partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.5.40CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:6.0:*:*:*:*:*:*:*
6.0.1CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:6.0.1:*:*:*:*:*:*:*
6.0.2CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:6.0.2:*:*:*:*:*:*:*
6.0.3CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:6.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.5LOW

AV:N/AC:M/Au:S/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.01%
Probability of exploitation in next 30 days
EPSS Percentile
78.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0201 is in the 90th percentile among its peer group of 1,638 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 6.2.15
composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 7.4.0

Vendor Advisories (1)

composerGHSA-989h-wv8x-933plow

TYPO3 cross-site scripting (XSS)

May 14, 2022

References

packetstormsecurity.com / files/133551/Typo3-CMS-6.2.14-4.5.40-Cross-Site-Scripting.html
seclists.org / fulldisclosure/2015/Sep/57
typo3.org / teams/security/security-bulletins/typo3-core/typo3-core-sa-2015-009
Vendor Advisory
securityfocus.com / archive/1/536464/100/0/threaded
securitytracker.com / id/1033551