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CVE-2017-20174

30
FAUCET Score

CVE-2017-20174 is a critical injection vulnerability affecting the bastianallgeier Kirby Webmentions Plugin, specifically within an unspecified function. With a CVSS score of 9.8, this vulnerability allows for remote attacks with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While exploitation is known to be difficult and the attack complexity is rather high, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. A patch, identified as 55bedea78ae9af916a9a41497bd9996417851502, is available and recommended for remediation.

Impacted Technologies

VendorProductVersion(s)CPE
< 2017-02-01CPE matchmatch criteria
cpe:2.3:a:getkirby:webmentions:*:*:*:*:*:kirby:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.79%
Probability of exploitation in next 30 days
EPSS Percentile
52.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0079 is in the 36th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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

github.com / bastianallgeier/kirby-webmentions/commit/55bedea78ae9af916a9a41497bd9996417851502
PatchThird Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory
vuldb.com
Third Party Advisory