CVE-2022-29890Network attack vector

Stored XSS via unsanitized sidebar support link

Published Jul 15, 2022 · Updated Aug 3, 2024

Stored XSS in Octopus Server's help sidebar allows remote attackers to execute script in a user's browser through a crafted support link. The sidebar customization accepts a support-link value containing an XSS payload and later renders that stored value for portal users without safe neutralization. Execution requires a portal user to render the poisoned sidebar content, and resulting access is limited to the affected browser session.

CVSS severity6.1
Medium
EPSS probability0.45%
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's help sidebar allows remote attackers to execute script in a user's browser through a crafted support link. The sidebar customization accepts a support-link value containing an XSS payload and later renders that stored value for portal users without safe neutralization. Execution requires a portal user to render the poisoned sidebar content, and resulting access is limited to the affected browser session.

The record

CVE
CVE-2022-29890
Published
Jul 15, 2022
Updated
Aug 3, 2024
Vendor
Octopus Deploy
Product
Octopus Server
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2019.7.0 <unspecified
  2. Affected versionversion=2022.1.2121 <unspecified
  3. Affected versionversion=2022.2.6729 <unspecified
  4. Affected versionversion=2022.3.348 <unspecified
  5. Affected versionversion=unspecified <2021.3.13021
  6. Affected versionversion=unspecified <2022.1.2894
  7. Affected versionversion=unspecified <2022.2.6971
  8. Affected versionversion=unspecified <2022.3.2387

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Octopus Deploy · Octopus Serverversion=2019.7.0 <unspecified; version=2022.1.2121 <unspecified; version=2022.2.6729 <unspecified; version=2022.3.348 <unspecified; version=unspecified <2021.3.13021; version=unspecified <2022.1.2894; version=unspecified <2022.2.6971; version=unspecified <2022.3.2387

Published CVSS scores

6.1NIST NVDCVSS: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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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