CVE-2020-6949: A privilege escalation issue was discovered in the postUser function in HashBrown CMS through 1.3.3

Q: How do I fix CVE-2020-6949?

hashbrown cms: upgrade to newer than 1.3.3. Exact commands for each OS are on this page.

Q: Is CVE-2020-6949 being exploited?

CVE-2020-6949 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-2020-6949 affect?

CVE-2020-6949 affects hashbrown cms. Severity is high (CVSS 8.8). A privilege escalation issue was discovered in the postUser function in HashBrown CMS through 1.3.3. An editor user can change the password hash of an admin user's account, or otherwise reconfigure that account.

Q: How urgent is CVE-2020-6949?

Priority 53/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2020-6949 is a high-severity flaw (CVSS 8.8) affecting hashbrown cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A privilege escalation issue was discovered in the postUser function in HashBrown CMS through 1.3.3. An editor user can change the password hash of an admin user's account, or otherwise reconfigure that account.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-269
Published	2020-01-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hashbrowncms

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

Am I affected?

Timeline

2020-01-13 19:15 UTCPublished CVE record published
2026-06-17 03:24 UTCUpdated Record last modified

hashbrowncms hashbrown cms UPGRADE

Affected: <= 1.3.3

Fixed in: newer than 1.3.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hashbrown-cms || rpm -q hashbrown-cms || hashbrown-cms --version

2. UPGRADE to newer than 1.3.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hashbrown-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hashbrown-cms

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-2020-6949?

hashbrown cms: upgrade to newer than 1.3.3. Exact commands for each OS are on this page.

Is CVE-2020-6949 being exploited?

CVE-2020-6949 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-2020-6949 affect?

CVE-2020-6949 affects hashbrown cms. Severity is high (CVSS 8.8). A privilege escalation issue was discovered in the postUser function in HashBrown CMS through 1.3.3. An editor user can change the password hash of an admin user's account, or otherwise reconfigure that account.

How urgent is CVE-2020-6949?

Priority 53/100. High severity; Public exploit reference

Related CVEs

CVE-2020-6948 CRITICAL 9.8 UPGRADE A remote code execution issue was discovered in HashBrown CMS through 1.3.3
CVE-2020-5840 HIGH 7.5 UPGRADE An issue was discovered in HashBrown CMS before 1.3.2

References

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