CVE-2024-58285Public exploitNetwork attack vector

Stored XSS via unsanitized post titles

Published Dec 10, 2025 · Updated Dec 10, 2025

Stored cross-site scripting in Chyrp 2.5.2 allows remote authenticated users to execute scripts via crafted post titles. The add_post handler accepts the multipart title field, stores its HTML payload, and later renders it to post viewers without effective neutralization. A valid author session is required to publish the payload, and a viewer must open the post; resulting script execution exposes session data and permits actions in that viewer's context.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Chyrp 2.5.2 allows remote authenticated users to execute scripts via crafted post titles. The add_post handler accepts the multipart title field, stores its HTML payload, and later renders it to post viewers without effective neutralization. A valid author session is required to publish the payload, and a viewer must open the post; resulting script execution exposes session data and permits actions in that viewer's context.

The record

CVE
CVE-2024-58285
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
Chyrp
Product
Chyrp
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 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=2.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chyrp · Chyrpversion=2.5.2

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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