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CVE-2017-11507

17
FAUCET Score

CVE-2017-11507 describes a cross-site scripting (XSS) vulnerability in Check_MK versions 1.2.8x prior to 1.2.8p25 and 1.4.0x prior to 1.4.0p9. This allows an unauthenticated attacker to inject arbitrary HTML or JavaScript through the output_format parameter or the username parameter during failed HTTP basic authentication attempts. Rated 6.1 MEDIUM, the vulnerability has a low attack complexity and requires user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.8CPE matchmatch criteria
cpe:2.3:a:check_mk_project:check_mk:1.2.8:*:*:*:*:*:*:*
1.2.8CPE matchmatch criteria
cpe:2.3:a:check_mk_project:check_mk:1.2.8:b1:*:*:*:*:*:*
1.2.8CPE matchmatch criteria
cpe:2.3:a:check_mk_project:check_mk:1.2.8:b10:*:*:*:*:*:*
1.2.8CPE matchmatch criteria
cpe:2.3:a:check_mk_project:check_mk:1.2.8:b11:*:*:*:*:*:*
1.2.8CPE matchmatch criteria
cpe:2.3:a:check_mk_project:check_mk:1.2.8:b2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 72nd percentile among its peer group of 26,219 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, 0.1 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

Vendor Patches (4)

lexmarkvendor investigatingvia llm_extracted
libreofficevendor investigatingvia llm_extracted
mitelvendor investigatingvia llm_extracted
postgresqlvendor investigatingvia llm_extracted

Vendor Advisories (5)

mitelllm-mitel-844659fc491e8832MEDIUM

[R2] Check_MK Multisite Web UI Stored and Reflected XSS

Nov 2, 2017
postgresqlllm-postgresql-7d68271b018f05e1MEDIUM

[R2] Check_MK Multisite Web UI Stored and Reflected XSS

Nov 2, 2017
lexmarkllm-lexmark-d2364785ade4996aMEDIUM

[R2] Check_MK Multisite Web UI Stored and Reflected XSS

Nov 2, 2017
libreofficellm-libreoffice-9be3a97f19d2f5ceMEDIUM

[R2] Check_MK Multisite Web UI Stored and Reflected XSS

Nov 2, 2017
redhatCVE-2017-11507Moderate

check-mk: Stored XSS vulnerability using the internal server error handler

Jul 6, 2017

References

mathias-kettner.com / check_mk_werks.php
Vendor Advisory
tenable.com / security/research/tra-2017-20
ExploitThird Party Advisory