CVE-2021-43494: OpenCV-REST-API master branch as of commit 69be158c05d4dd5a4aff38fdc680a162dd6b9e49 is affected by a directory

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2021-43494 is a high-severity flaw (CVSS 7.5) affecting opencv rest api. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenCV-REST-API master branch as of commit 69be158c05d4dd5a4aff38fdc680a162dd6b9e49 is affected by a directory traversal vulnerability. This attack can cause the disclosure of critical secrets stored anywhere on the system and can significantly aid in getting remote code access.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.3% (top 11%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-11-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: codingforentrepreneurs

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

Am I affected?

Timeline

2021-11-12 14:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

codingforentrepreneurs opencv rest api DOWNGRADE

Affected: 2020-01-24

Fixed in: no fixed release known

Safe to downgrade to: a release before 2020-01-24

1. Check installed version

apt-cache policy opencv-rest-api || rpm -q opencv-rest-api || opencv-rest-api --version

2. No fixed release: DOWNGRADE to a release before 2020-01-24 (Debian / Ubuntu)

apt-cache madison opencv-rest-api sudo apt install opencv-rest-api=<VERSION_BEFORE_2020-01-24> sudo apt-mark hold opencv-rest-api

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

dnf --showduplicates list opencv-rest-api sudo dnf downgrade opencv-rest-api-<VERSION_BEFORE_2020-01-24> sudo dnf versionlock add opencv-rest-api

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-2021-43494?

opencv rest api: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43494 being exploited?

CVE-2021-43494 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-2021-43494 affect?

CVE-2021-43494 affects opencv rest api. Severity is high (CVSS 7.5). OpenCV-REST-API master branch as of commit 69be158c05d4dd5a4aff38fdc680a162dd6b9e49 is affected by a directory traversal vulnerability. This attack can cause the disclosure of critical secrets stored anywhere on the system and can significa

How urgent is CVE-2021-43494?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

← Back to latest CVEs