CVE-2025-0513Network attack vector

Stored XSS via unsafe error-message handling

Published Feb 11, 2025 · Updated Feb 11, 2025

Stored XSS in Octopus Server 2024.3 and 2024.4 allows remote authenticated users to run script in an error-page viewer's browser. The error page places attacker-controlled portions of error messages into page output without neutralizing embedded code, which executes when another user views it. Exploitation requires high privileges, specific conditions, and active interaction by the viewing user; impact is limited to that viewer's browser context.

CVSS severity1.8
Low
EPSS probability0.24%
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 Octopus Server 2024.3 and 2024.4 allows remote authenticated users to run script in an error-page viewer's browser. The error page places attacker-controlled portions of error messages into page output without neutralizing embedded code, which executes when another user views it. Exploitation requires high privileges, specific conditions, and active interaction by the viewing user; impact is limited to that viewer's browser context.

The record

CVE
CVE-2025-0513
Published
Feb 11, 2025
Updated
Feb 11, 2025
Vendor
Octopus Deploy
Product
Octopus Server
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 11, 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=2024.3.164 <2024.3.12985
  2. Affected versionversion=2024.4.401 <2024.4.6962

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Octopus Deploy · Octopus Serverversion=2024.3.164 <2024.3.12985; version=2024.4.401 <2024.4.6962

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
1.8Octopus DeployCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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