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CVE-2022-31530: The csm-aut/csm repository through 3.5 on GitHub allows absolute path traversal because the Flask send_file fu

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CRITICAL 9.3REMOTEUPGRADE

CVE-2022-31530 is a critical-severity flaw (CVSS 9.3) affecting csm server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The csm-aut/csm repository through 3.5 on GitHub allows absolute path traversal because the Flask send_file function is used unsafely.

Why this priority

  • Critical severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.3 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.3% (top 29%)
CISA exploited listNo
WeaknessCWE-22
Published2022-07-11
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: csm server project

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

Am I affected?

Timeline

csm server project csm server UPGRADE
Affected: <= 3.5
Fixed in: newer than 3.5
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy csm-server || rpm -q csm-server || csm-server --version
2. UPGRADE to newer than 3.5 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade csm-server
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade csm-server
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-2022-31530?

csm server: upgrade to newer than 3.5. Exact commands for each OS are on this page.

Is CVE-2022-31530 being exploited?

CVE-2022-31530 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-2022-31530 affect?

CVE-2022-31530 affects csm server. Severity is critical (CVSS 9.3). The csm-aut/csm repository through 3.5 on GitHub allows absolute path traversal because the Flask send_file function is used unsafely.

How urgent is CVE-2022-31530?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities · Flask vulnerabilities

References

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