CVE-2021-38623: The deferred_image_processing (aka Deferred image processing) extension before 1.0.2 for TYPO3 allows Denial o

Q: How do I fix CVE-2021-38623?

deferred image processing: upgrade to 1.0.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-38623 being exploited?

CVE-2021-38623 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-2021-38623 affect?

CVE-2021-38623 affects deferred image processing. Severity is high (CVSS 7.5). The deferred_image_processing (aka Deferred image processing) extension before 1.0.2 for TYPO3 allows Denial of Service via the FAL API because of /var/transient disk consumption.

Q: How urgent is CVE-2021-38623?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2021-38623 is a high-severity flaw (CVSS 7.5) affecting deferred image processing. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The deferred_image_processing (aka Deferred image processing) extension before 1.0.2 for TYPO3 allows Denial of Service via the FAL API because of /var/transient disk consumption.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-404
Published	2021-08-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: deferred image processing project

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

Am I affected?

Timeline

2021-08-13 17:15 UTCPublished CVE record published
2026-06-17 04:02 UTCUpdated Record last modified

deferred image processing project deferred image processing UPGRADE

Affected: < 1.0.2

Fixed in: 1.0.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy deferred-image-processing || rpm -q deferred-image-processing || deferred-image-processing --version

2. UPGRADE to 1.0.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade deferred-image-processing

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade deferred-image-processing

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-2021-38623?

deferred image processing: upgrade to 1.0.2. Exact commands for each OS are on this page.

Is CVE-2021-38623 being exploited?

CVE-2021-38623 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-2021-38623 affect?

CVE-2021-38623 affects deferred image processing. Severity is high (CVSS 7.5). The deferred_image_processing (aka Deferred image processing) extension before 1.0.2 for TYPO3 allows Denial of Service via the FAL API because of /var/transient disk consumption.

How urgent is CVE-2021-38623?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Software pages

TYPO3 vulnerabilities

References

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