CVE-2026-21761: HCL DevOps Loop is affected by a Cross-Origin Resource Sharing (CORS) misconfiguration

Routine

MEDIUM 4.2DOWNGRADE

CVE-2026-21761 is a medium-severity flaw (CVSS 4.2) affecting devops loop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HCL DevOps Loop is affected by a Cross-Origin Resource Sharing (CORS) misconfiguration. Improper CORS configuration may allow unauthorized cross-origin requests, potentially exposing application resources to untrusted domains.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.2 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-942
Published	2026-07-17
Last modified	2026-10-24

Publisher (CNA): HCL Software · Vendor: hcltech

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-17 17:17 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

hcltech devops loop DOWNGRADE

Affected: 2.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy devops-loop || rpm -q devops-loop || devops-loop --version

2. No fixed release: DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison devops-loop sudo apt install devops-loop=<VERSION_BEFORE_2.0.0> sudo apt-mark hold devops-loop

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list devops-loop sudo dnf downgrade devops-loop-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add devops-loop

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-21761?

devops loop: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-21761 being exploited?

CVE-2026-21761 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-2026-21761 affect?

CVE-2026-21761 affects devops loop. Severity is medium (CVSS 4.2). HCL DevOps Loop is affected by a Cross-Origin Resource Sharing (CORS) misconfiguration. Improper CORS configuration may allow unauthorized cross-origin requests, potentially exposing application resources to untrusted domains.

How urgent is CVE-2026-21761?

Priority 17/100. No elevated risk signals yet.

Related CVEs

CVE-2026-21762 LOW 3.7 DOWNGRADE HCL DevOps Loop is affected by missing HTTP security headers
CVE-2026-21760 MEDIUM 4.6 DOWNGRADE HCL DevOps Loop is affected by an Unauthorized Access to Admin Functionality (Forced Browsing) vulnerability
CVE-2026-21764 LOW 3.1 DOWNGRADE HCL DevOps Loop is affected by insufficient input validation that allows special characters where they should

References

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