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Fencer Intel
medium 5.6

CVE-2017-20174 json

bastianallgeier Kirby Webmentions Plugin injection

published 2023-01-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11171

cvss
5.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

A vulnerability was found in bastianallgeier Kirby Webmentions Plugin and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The patch is identified as 55bedea78ae9af916a9a41497bd9996417851502. It is recommended to apply a patch to fix this issue. VDB-218894 is the identifier assigned to this vulnerability.

Patch / fix

  • getkirby webmentions 2017-02-01

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA 3.0 5.6 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • bastianallgeier Kirby Webmentions Plugin

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.