CVE-2024-26495Public exploitNetwork attack vector

Stored script execution via unsanitized BBCode links

Published Apr 3, 2024 · Updated Mar 18, 2025

Stored XSS in Friendica 2023.12 allows remote attackers to execute script in readers' browsers through crafted BBCode links. The BBCode parser accepts a quote inside a URL value and emits the remaining text as an onmouseover attribute instead of sanitizing the link. A reader must view the stored post and hover over its link; the script then runs in that reader's Friendica session and can access or alter session-visible data.

CVSS severity6.1
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Friendica 2023.12 allows remote attackers to execute script in readers' browsers through crafted BBCode links. The BBCode parser accepts a quote inside a URL value and emits the remaining text as an onmouseover attribute instead of sanitizing the link. A reader must view the stored post and hover over its link; the script then runs in that reader's Friendica session and can access or alter session-visible data.

The record

CVE
CVE-2024-26495
Published
Apr 3, 2024
Updated
Mar 18, 2025
Vendor
Friendica
Product
Friendica
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v.2023.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Friendica · Friendicaversion=v.2023.12

Published CVSS scores

6.1CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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