CVE-2022-2781Network attack vector

Sensitive-data exposure via shared encryption process

Published Oct 6, 2022 · Updated Aug 3, 2024

Encryption weakness in affected Octopus Server releases allows remote attackers to read sensitive data through crafted session-cookie input. The server uses the same encryption process for stored variables and session cookies, allowing cookies to be encrypted through unintended methods. Network access is sufficient, with no authentication or user interaction; the reported consequence is confidentiality-only data exposure.

CVSS severity5.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Encryption weakness in affected Octopus Server releases allows remote attackers to read sensitive data through crafted session-cookie input. The server uses the same encryption process for stored variables and session cookies, allowing cookies to be encrypted through unintended methods. Network access is sufficient, with no authentication or user interaction; the reported consequence is confidentiality-only data exposure.

The record

CVE
CVE-2022-2781
Published
Oct 6, 2022
Updated
Aug 3, 2024
Vendor
Octopus Deploy
Product
Octopus Server
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 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

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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=2022.2.6729 <unspecified
  2. Affected versionversion=2022.3.348 <unspecified
  3. Affected versionversion=3.2.10 <unspecified
  4. Affected versionversion=unspecified <2022.1.3154
  5. Affected versionversion=unspecified <2022.2.7897
  6. Affected versionversion=unspecified <2022.3.10586

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Octopus Deploy · Octopus Serverversion=2022.2.6729 <unspecified; version=2022.3.348 <unspecified; version=3.2.10 <unspecified; version=unspecified <2022.1.3154; version=unspecified <2022.2.7897; version=unspecified <2022.3.10586

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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-327Use of a Broken or Risky Cryptographic Algorithm

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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