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CVE-2020-23915

19
FAUCET Score

CVE-2020-23915 is a heap-based buffer over-read vulnerability affecting cpp-peglib through version 0.1.12, specifically within the peg::resolve_escape_sequence() function in peglib.h. With a CVSS score of 5.5 (Medium), this vulnerability requires local access and user interaction (e.g., opening a malicious file) to trigger, potentially leading to a denial of service. 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
<= 0.1.12CPE matchmatch criteria
cpe:2.3:a:cpp-peglib_project:cpp-peglib:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 65th percentile among its peer group of 5,760 CVEs.

Social Chatter

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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

cwe.mitre.org / data/definitions/126.html
Technical Description
github.com / yhirose/cpp-peglib/commit/b3b29ce8f3acf3a32733d930105a17d7b0ba347e
PatchThird Party Advisory
github.com / yhirose/cpp-peglib/issues/122
ExploitIssue TrackingThird Party Advisory