CVE-2026-2971: A vulnerability was found in a466350665 Smart-SSO up to 2.1.1

Q: How do I fix CVE-2026-2971?

smart-sso: upgrade to newer than 2.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-2971 being exploited?

CVE-2026-2971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-2971 affect?

CVE-2026-2971 affects smart-sso. Severity is medium (CVSS 4.3). A vulnerability was found in a466350665 Smart-SSO up to 2.1.1. Affected by this issue is some unknown functionality of the file smart-sso-server/src/main/resources/templates/login.html of the component Login. Performing a manipulation of th

Q: How urgent is CVE-2026-2971?

Priority 28/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-2971 is a medium-severity flaw (CVSS 4.3) affecting smart-sso. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in a466350665 Smart-SSO up to 2.1.1. Affected by this issue is some unknown functionality of the file smart-sso-server/src/main/resources/templates/login.html of the component Login. Performing a manipulation of the argument redirectUri results in cross site scripting. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosur

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2026-02-23
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: a466350665

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-23 05:16 UTCPublished CVE record published
2026-06-17 10:32 UTCUpdated Record last modified

a466350665 smart-sso UPGRADE

Affected: <= 2.1.1

Fixed in: newer than 2.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy smart-sso || rpm -q smart-sso || smart-sso --version

2. UPGRADE to newer than 2.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade smart-sso

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade smart-sso

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2971?

smart-sso: upgrade to newer than 2.1.1. Exact commands for each OS are on this page.

Is CVE-2026-2971 being exploited?

CVE-2026-2971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2971 affect?

CVE-2026-2971 affects smart-sso. Severity is medium (CVSS 4.3). A vulnerability was found in a466350665 Smart-SSO up to 2.1.1. Affected by this issue is some unknown functionality of the file smart-sso-server/src/main/resources/templates/login.html of the component Login. Performing a manipulation of th

How urgent is CVE-2026-2971?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2026-2972 LOW 2.4 UPGRADE A vulnerability was determined in a466350665 Smart-SSO up to 2.1.1

References

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