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CVE-2015-5147

21
FAUCET Score

CVE-2015-5147 describes a stack-based buffer overflow vulnerability in the header_anchor function of the HTML renderer within Redcarpet versions prior to 3.3.2. This flaw allows an unauthenticated attacker to trigger a denial of service (crash) and potentially execute arbitrary code through unspecified vectors. With a CVSS score of 7.5, this vulnerability is considered high severity due to its network-based attack vector, low attack complexity, and potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.3.1CPE matchmatch criteria
cpe:2.3:a:redcarpet_project:redcarpet:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.54%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0254 is in the 70th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rubygemspatch availablevia ghsa
Product: redcarpetFixed in: 3.3.2

Vendor Advisories (1)

rubygemsGHSA-7322-9mx6-5j2mhigh

redcarpet Buffer Overflow vulnerability

Aug 15, 2018

References

github.com / vmg/redcarpet/blob/master/CHANGELOG.md
openwall.com / lists/oss-security/2015/06/29/3
openwall.com / lists/oss-security/2015/06/30/10
securityfocus.com / bid/75508