CVE-2021-38616: In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/user/{user-guid}/ user edition endpoint could pe

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HIGH 7.6DOWNGRADE

CVE-2021-38616 is a high-severity flaw (CVSS 7.6) affecting natural language processing. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/user/{user-guid}/ user edition endpoint could permit any logged-in user to increase their own permissions via a user_permissions array in a PATCH request. A guest user could modify other users' profiles and much more.

Why this priority

High severity

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

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Published	2021-09-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: eigentech

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

Am I affected?

Timeline

2021-09-07 12:15 UTCPublished CVE record published
2026-06-17 04:02 UTCUpdated Record last modified

eigentech natural language processing DOWNGRADE

Affected: 3.10.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.10.1

1. Check installed version

apt-cache policy natural-language-processing || rpm -q natural-language-processing || natural-language-processing --version

2. No fixed release: DOWNGRADE to a release before 3.10.1 (Debian / Ubuntu)

apt-cache madison natural-language-processing sudo apt install natural-language-processing=<VERSION_BEFORE_3.10.1> sudo apt-mark hold natural-language-processing

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

dnf --showduplicates list natural-language-processing sudo dnf downgrade natural-language-processing-<VERSION_BEFORE_3.10.1> sudo dnf versionlock add natural-language-processing

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-2021-38616?

natural language processing: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-38616 being exploited?

CVE-2021-38616 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-2021-38616 affect?

CVE-2021-38616 affects natural language processing. Severity is high (CVSS 7.6). In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/user/{user-guid}/ user edition endpoint could permit any logged-in user to increase their own permissions via a user_permissions array in a PATCH request. A guest user could modi

How urgent is CVE-2021-38616?

Priority 44/100. High severity

Related CVEs

CVE-2021-38617 HIGH 8.8 DOWNGRADE In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/user/ user creation endpoint allows a standard u
CVE-2021-38615 MEDIUM 6.3 DOWNGRADE In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/sso/config/ SSO configuration endpoint allows an

References

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