CVE-2021-33054
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any...
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
7.5
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
CVE-2021-33054- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-347
- Updated
- 2026-11-02
CVE List No score
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
CVE-2021-33054- Updated
- 2026-11-02
EUVDEUVD-2021-19769 No score
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
EUVD-2021-19769- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5x58-gqg4-wfvq
7.5
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any...
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
GHSA-5x58-gqg4-wfvq- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-347
- Updated
- 2026-11-02
OSV
7.5
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
CVE-2021-33054- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-33054
7.5
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
DEBIAN-CVE-2021-33054- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-33054
7.5
SOGo 2.x before 2.4.1 and 3.x through 5.x before 5.1.1 does not validate the signatures of any SAML assertions it receives. Any actor with network access to the deployment could impersonate users when SAML is the authentication method. (Only versions after 2.0.5a are affected.)
- Record
UBUNTU-CVE-2021-33054- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVMGASA-2022-0481 No score
Updated sogo packages fix security vulnerability
Missing SAML signature validation in the SOGo groupware could result in impersonation attacks. (CVE-2021-33054)
- Record
MGASA-2022-0481- Updated
- 2026-11-02
OSVUSN-8504-1 No score
sogo vulnerabilities
It was discovered that SOGo did not properly sanitize categories used for events, tasks, and contacts. A remote authenticated attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 26.04 LTS. (CVE-2025-71276)
It was discovered that SOGo did not properly sanitize the hint query parameter. A remote attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-3054)
It was discovered that SOGo did not renew the one-time password when a user disabled and re-enabled it, and used a shorter length than recommended. A remote attacker could possibly use this issue to bypass authentication. This issue only affected Ubuntu 22.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-33550)
It was discovered that SOGo did not properly use the SQL adaptor for the user source, resulting in SQL injection when certain databases were used. A remote authenticated attacker could possibly use this issue to obtain sensitive information or execute arbitrary SQL commands. (CVE-2026-46445, CVE-2026-46446)
It was discovered that SOGo did not properly sanitize mail containing ICS calendar invitations. A remote attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-8496)
It was discovered that SOGo did not properly validate identifiers when managing access control lists. A remote authenticated attacker could possibly use this issue to perform SQL injection attacks and obtain sensitive information. (CVE-2026-8851)
It was discovered that SOGo did not properly sanitize the theme parameter. A remote attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2025-63499)
It was discovered that SOGo did not properly sanitize the userName parameter on the login page. A remote attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2025-63498)
It was discovered that SOGo did not properly sanitize attachments when previewing them. A remote attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-34462)
It was discovered that SOGo did not validate the signatures of SAML assertions it received when SAML was used for authentication. A remote attacker could possibly use this issue to impersonate other users. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-33054)
- Record
USN-8504-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sogoDebian:12 |
before 5.1.1-1 | 5.1.1-1 |
sogoDebian:13 |
before 5.1.1-1 | 5.1.1-1 |
sogoDebian:9 |
before 3.2.6-2+deb9u1, plus listed versions 3.2.6-2 |
3.2.6-2+deb9u1 |
sogoDebian:10 |
before 4.0.7-1+deb10u2, plus listed versions 4.0.7-14.0.7-1+deb10u1 |
4.0.7-1+deb10u2 |
sogoDebian:11 |
before 5.0.1-4+deb11u1, plus listed versions 5.0.1-4 |
5.0.1-4+deb11u1 |
sogoMageia:8 |
before 5.6.0-1.mga8 | 5.6.0-1.mga8 |
sopeMageia:8 |
before 5.6.0-1.1.mga8 | 5.6.0-1.1.mga8 |
sogoUbuntu:Pro:16.04:LTS |
before 2.2.17a-1.1ubuntu0.1~esm1, plus listed versions 2.2.17a-12.2.17a-1.12.2.17a-1.1build1 |
2.2.17a-1.1ubuntu0.1~esm1 |
sogoUbuntu:Pro:18.04:LTS |
before 3.2.10-1ubuntu0.1~esm1, plus listed versions 3.2.10-13.2.10-1build1 |
3.2.10-1ubuntu0.1~esm1 |
sogoUbuntu:Pro:20.04:LTS |
before 4.3.0-1ubuntu0.1~esm1, plus listed versions 4.0.8-14.1.0-14.1.1-14.3.0-1 |
4.3.0-1ubuntu0.1~esm1 |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
sogoUbuntu:Pro:16.04:LTS From an advisory covering 11 CVEs |
before 2.2.17a-1.1ubuntu0.1~esm1, plus listed versions 2.2.17a-12.2.17a-1.12.2.17a-1.1build1 |
2.2.17a-1.1ubuntu0.1~esm1 |
sogoUbuntu:Pro:18.04:LTS From an advisory covering 11 CVEs |
before 3.2.10-1ubuntu0.1~esm1, plus listed versions 3.2.10-13.2.10-1build1 |
3.2.10-1ubuntu0.1~esm1 |
sogoUbuntu:Pro:20.04:LTS From an advisory covering 11 CVEs |
before 4.3.0-1ubuntu0.1~esm1, plus listed versions 4.0.8-14.1.0-14.1.1-14.3.0-1 |
4.3.0-1ubuntu0.1~esm1 |
sogoUbuntu:Pro:22.04:LTS From an advisory covering 11 CVEs |
before 5.5.1-1ubuntu0.1~esm1, plus listed versions 5.1.0-15.2.0-15.2.0-35.3.0-15.3.0-1build25.4.0-15.5.0-15.5.1-1 |
5.5.1-1ubuntu0.1~esm1 |
sogoUbuntu:Pro:26.04:LTS From an advisory covering 11 CVEs |
before 5.12.4-1.2ubuntu0.1~esm1, plus listed versions 5.12.1-35.12.4-15.12.4-1.15.12.4-1.2 |
5.12.4-1.2ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33054 is a high vulnerability (CVSS 7.5) in Inverse Sogo, published June 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 62nd percentile. Fixed in sogo 5.1.1-1.
References
sogo.nu/news.html
github.com/inverse-inc/sogo/blob/master/CHANGELOG.md
blogs.akamai.com/2021/06/sogo-and-packetfence-impacted-by-saml-implementation-vulnerabilities.html
lists.debian.org/debian-lts-announce/2021/07/msg00007.html
debian.org/security/2021/dsa-5029
nvd.nist.gov/vuln/detail/CVE-2021-33054
Show 21 moreShow less
github.com/advisories/GHSA-5x58-gqg4-wfvq
security-tracker.debian.org/tracker/CVE-2021-33054
advisories.mageia.org/MGASA-2022-0481.html
bugs.mageia.org/show_bug.cgi?id=29255
debian.org/lts/security/2021/dla-2707
ubuntu.com/security/CVE-2021-33054
sogo.nu/news/2021/saml-vulnerability.html
blogs.akamai.com/2021/06/saml-implementation-vulnerability-impacting-some-akamai-services.html
blogs.akamai.com/2021/06/akamai-eaa-impersonation-vulnerability---a-deep-dive.html
cve.org/CVERecord?id=CVE-2021-33054
ubuntu.com/security/notices/USN-8504-1
ubuntu.com/security/CVE-2024-34462
ubuntu.com/security/CVE-2025-63498
ubuntu.com/security/CVE-2025-63499
ubuntu.com/security/CVE-2025-71276
ubuntu.com/security/CVE-2026-3054
ubuntu.com/security/CVE-2026-8496
ubuntu.com/security/CVE-2026-8851
ubuntu.com/security/CVE-2026-33550
ubuntu.com/security/CVE-2026-46445
ubuntu.com/security/CVE-2026-46446