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CVE-2017-11692

23
FAUCET Score

CVE-2017-11692 is a denial-of-service vulnerability affecting yaml-cpp 0.5.3 and earlier, specifically within the "Token& Scanner::peek" function in scanner.cpp. An unauthenticated remote attacker can trigger an assertion failure and application exit by providing a specially crafted '!2' string. This vulnerability is rated as HIGH severity (CVSS 7.5), indicating a low attack complexity and high impact on availability, with no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.5.3CPE matchmatch criteria
cpe:2.3:a:yaml-cpp_project:yaml-cpp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.25%
Probability of exploitation in next 30 days
EPSS Percentile
81.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0225 is in the 66th 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

Vendor Patches (11)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 12 (Pike)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mongodb26-yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mongodb30upg-yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mongodb32-yaml-cpp
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mongodb34-yaml-cpp

Vendor Advisories (1)

redhatCVE-2017-11692Moderate

yaml-cpp: assertion failure in Token& Scanner::peek function

Jul 28, 2017

References

github.com / jbeder/yaml-cpp/issues/519
ExploitThird Party Advisory
security.gentoo.org / glsa/202007-14