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CVE-2024-22088: Lotos WebServer through 0.1.1 (commit 3eb36cc) has a use-after-free in buffer_avail() at buffer.h via a long U

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CRITICAL 9.8REMOTEUPGRADE

CVE-2024-22088 is a critical-severity flaw (CVSS 9.8) affecting lotos webserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Lotos WebServer through 0.1.1 (commit 3eb36cc) has a use-after-free in buffer_avail() at buffer.h via a long URI, because realloc is mishandled.

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 score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.7% (top 46%)
CISA exploited listNo
WeaknessCWE-416
Published2024-01-05
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: chendotjs

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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

chendotjs lotos webserver UPGRADE
Affected: <= 0.1.1
Fixed in: newer than 0.1.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy lotos-webserver || rpm -q lotos-webserver || lotos-webserver --version
2. UPGRADE to newer than 0.1.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade lotos-webserver
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade lotos-webserver
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-2024-22088?

lotos webserver: upgrade to newer than 0.1.1. Exact commands for each OS are on this page.

Is CVE-2024-22088 being exploited?

CVE-2024-22088 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-2024-22088 affect?

CVE-2024-22088 affects lotos webserver. Severity is critical (CVSS 9.8). Lotos WebServer through 0.1.1 (commit 3eb36cc) has a use-after-free in buffer_avail() at buffer.h via a long URI, because realloc is mishandled.

How urgent is CVE-2024-22088?

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

References

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