CVE-2021-43999

mediumpriority · track · 36EPSS 0.018 · 78 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.78% (78th) EPSS

CVSS 6 · medium

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6–8.8

v2.06mediumAV:N/AC:M/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 6.8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimary

affected products (8)

Products and version ranges known to be affected.

Apache Software Foundation Apache Guacamole≤ 1.2.0enisa_euvdEU
Apache Software Foundation Apache Guacamole≤ 1.3.0enisa_euvdEU
apache guacamole= 1.2.0nvdUScpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*
apache guacamole= 1.3.0nvdUScpe:2.3:a:apache:guacamole:*:*:*:*:*:*:*:*
Bitnami guacamole= 1.2.0osvUSpkg:bitnami/guacamole
Bitnami guacamole= 1.3.0osvUSpkg:bitnami/guacamole
Bitnami guacamole-server= 1.2.0osvUSpkg:bitnami/guacamole-server
Bitnami guacamole-server= 1.3.0osvUSpkg:bitnami/guacamole-server

advisories (2)

Vendor and ecosystem advisories describing this.

BIT-guacamole-2021-439992024-03-06vendor · osvUS
Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.
BIT-guacamole-server-2021-439992024-03-06vendor · osvUS
Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.

also known as (5)

Other names and identifiers for this entity.

CNNVD-202201-892 cnnvd
EUVD-2021-30858 enisa_euvd
GHSA-v83c-8hcj-4545 enisa_euvd
BIT-guacamole-2021-43999osv
BIT-guacamole-server-2021-43999osv

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2022-01-11modified 2026-06-17

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+7719 more

references (7)

External citations — patches, advisories, analysis.

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