CVE-2026-57111: Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filt

Q: How do I fix CVE-2026-57111?

helix: upgrade to 2.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-57111 being exploited?

CVE-2026-57111 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-2026-57111 affect?

CVE-2026-57111 affects helix. Severity is high (CVSS 7.5). Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filters.CORSFilter) in Apache Helix through 2.0.0 on all platforms allows a remote attacker controlling a web page visited by an autho

Q: How urgent is CVE-2026-57111?

Priority 43/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2026-57111 is a high-severity flaw (CVSS 7.5) affecting helix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filters.CORSFilter) in Apache Helix through 2.0.0 on all platforms allows a remote attacker controlling a web page visited by an authorized user to read responses from and issue cross-origin requests to administrative REST endpoints via a cross-origin request from an arbitrary origin, since the filter unconditionally returns Access-Control-Al

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-1385
Published	2026-07-09
Last modified	2026-10-25

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-09 08:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

apache helix UPGRADE

Affected: < 2.0.1

Fixed in: 2.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy helix || rpm -q helix || helix --version

2. UPGRADE to 2.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade helix

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade helix

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-2026-57111?

helix: upgrade to 2.0.1. Exact commands for each OS are on this page.

Is CVE-2026-57111 being exploited?

CVE-2026-57111 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-2026-57111 affect?

CVE-2026-57111 affects helix. Severity is high (CVSS 7.5). Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filters.CORSFilter) in Apache Helix through 2.0.0 on all platforms allows a remote attacker controlling a web page visited by an autho

How urgent is CVE-2026-57111?

Priority 43/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

References

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