CVE-2026-27982Network attack vector

Authenticated-user redirection via unvalidated SAML RelayState

Published Mar 5, 2026 · Updated Mar 5, 2026

Open redirect in django-allauth before 65.14.1 allows remote attackers to send authenticated users to external sites through SAML SSO. The IdP-initiated SSO handler accepts any URL supplied in the SAML RelayState parameter and uses it directly as the post-authentication redirect destination. The path is reachable only when IdP-initiated SSO is enabled, which is disabled by default, and exploitation requires an authenticated user to follow the crafted flow.

CVSS severity5.1
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in django-allauth before 65.14.1 allows remote attackers to send authenticated users to external sites through SAML SSO. The IdP-initiated SSO handler accepts any URL supplied in the SAML RelayState parameter and uses it directly as the post-authentication redirect destination. The path is reachable only when IdP-initiated SSO is enabled, which is disabled by default, and exploitation requires an authenticated user to follow the crafted flow.

The record

CVE
CVE-2026-27982
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
allauth
Product
django-allauth
Classifications
CWE-601
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record 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=prior to 65.14.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

allauth · django-allauthversion=prior to 65.14.1

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.1JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/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.

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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-601URL Redirection to Untrusted Site ('Open Redirect')

Public exploit references

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Technologies

Your stack

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Your stack

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