CVE-2026-37637: An issue in Alexantr filemanager v.1.0 allows a remote attacker to execute arbitrary code via the filemanager.

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CRITICAL 9.1REMOTE

CVE-2026-37637 is a critical-severity flaw (CVSS 9.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in Alexantr filemanager v.1.0 allows a remote attacker to execute arbitrary code via the filemanager.php component

Why this priority

Critical severity
CISA SSVC: public proof of concept
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-06-29
Last modified	2026-10-25

Publisher (CNA): MITRE

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-06-29 20:17 UTCPublished CVE record published
2026-10-25 21:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · rust-opendal-core · FIXED · 0.59.1-2.fc46 · FEDORA-2026-4607543819 · source

sudo dnf upgrade --advisory=FEDORA-2026-4607543819

Fedora ELN · velocitty · FIXED · 1.0.3-2.eln159 · FEDORA-2026-edae8cd295 · source

sudo dnf upgrade --advisory=FEDORA-2026-edae8cd295

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: SLO-CYBER-SEC/CVE-2026-37637 (1 stars)

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-2026-37637?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-37637 being exploited?

CVE-2026-37637 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-2026-37637 affect?

CVE-2026-37637 affects affected software. Severity is critical (CVSS 9.1). An issue in Alexantr filemanager v.1.0 allows a remote attacker to execute arbitrary code via the filemanager.php component

How urgent is CVE-2026-37637?

Priority 56/100. Critical severity; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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