CVE-2026-21762: HCL DevOps Loop is affected by missing HTTP security headers

Routine

LOW 3.7REMOTEDOWNGRADE

CVE-2026-21762 is a low-severity flaw (CVSS 3.7) 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 missing HTTP security headers. Missing security headers may reduce browser protections against common web-based attacks such as clickjacking, MIME-type sniffing, and cross-site scripting.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-644
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-2026-21762?

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

Is CVE-2026-21762 being exploited?

CVE-2026-21762 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-2026-21762 affect?

CVE-2026-21762 affects devops loop. Severity is low (CVSS 3.7). HCL DevOps Loop is affected by missing HTTP security headers. Missing security headers may reduce browser protections against common web-based attacks such as clickjacking, MIME-type sniffing, and cross-site scripting.

How urgent is CVE-2026-21762?

Priority 23/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-21760 MEDIUM 4.6 DOWNGRADE HCL DevOps Loop is affected by an Unauthorized Access to Admin Functionality (Forced Browsing) vulnerability
CVE-2026-21761 MEDIUM 4.2 DOWNGRADE HCL DevOps Loop is affected by a Cross-Origin Resource Sharing (CORS) misconfiguration
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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