CVE-2026-31924: Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. tencent-cloud-cls log export

Routine

MEDIUM 5.3REMOTEWATCHLISTUPGRADE

CVE-2026-31924 is a medium-severity flaw (CVSS 5.3) affecting apisix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. tencent-cloud-cls log export uses plaintext HTTP This issue affects Apache APISIX: from 2.99.0 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the issue.

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-319
Published	2026-04-14
Last modified	2026-10-26

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 09:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

apache apisix UPGRADE

Affected: >= 2.99.0 and < 3.16.0

Fixed in: 3.16.0

Safe to downgrade to: a release before 2.99.0

1. Check installed version

apt-cache policy apisix || rpm -q apisix || apisix --version

2. UPGRADE to 3.16.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade apisix

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade apisix

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.99.0 (Debian / Ubuntu)

apt-cache madison apisix sudo apt install apisix=<VERSION_BEFORE_2.99.0> sudo apt-mark hold apisix

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list apisix sudo dnf downgrade apisix-<VERSION_BEFORE_2.99.0> sudo dnf versionlock add apisix

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-2026-31924?

apisix: upgrade to 3.16.0. Exact commands for each OS are on this page.

Is CVE-2026-31924 being exploited?

CVE-2026-31924 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-2026-31924 affect?

CVE-2026-31924 affects apisix. Severity is medium (CVSS 5.3). Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. tencent-cloud-cls log export uses plaintext HTTP This issue affects Apache APISIX: from 2.99.0 through 3.15.0. Users are recommended to upgrade to version 3.1

How urgent is CVE-2026-31924?

Priority 32/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Apache APISIX vulnerabilities

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References

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