CVE-2020-10591: An issue was discovered in Walmart Labs Concord before 1.44.0

Q: How do I fix CVE-2020-10591?

concord: upgrade to 1.44.0. Exact commands for each OS are on this page.

Q: Is CVE-2020-10591 being exploited?

CVE-2020-10591 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-2020-10591 affect?

CVE-2020-10591 affects concord. Severity is high (CVSS 7.5). An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host informat

Q: How urgent is CVE-2020-10591?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2020-10591 is a high-severity flaw (CVSS 7.5) affecting concord. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.

Why this priority

High severity
Remotely exploitable, no login, no user action

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	2.5% (top 15%)
CISA exploited list	No
Published	2020-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: walmart

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

Am I affected?

Timeline

2020-03-15 21:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

walmart concord UPGRADE

Affected: < 1.44.0

Fixed in: 1.44.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.44.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade concord

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-2020-10591?

concord: upgrade to 1.44.0. Exact commands for each OS are on this page.

Is CVE-2020-10591 being exploited?

CVE-2020-10591 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-2020-10591 affect?

CVE-2020-10591 affects concord. Severity is high (CVSS 7.5). An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host informat

How urgent is CVE-2020-10591?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

References

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