CVE-2026-3214: Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal CAPTCHA allows Functionality

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-3214 is a medium-severity flaw (CVSS 6.5) affecting captcha. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal CAPTCHA allows Functionality Bypass.This issue affects CAPTCHA: from 0.0.0 before 1.17.0, from 2.0.0 before 2.0.10.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-288
Published	2026-03-25
Last modified	2026-06-17

Publisher (CNA): Drupal.org · Vendor: arnabdotorg

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

Am I affected?

Timeline

2026-03-25 16:16 UTCPublished CVE record published
2026-06-17 10:43 UTCUpdated Record last modified

arnabdotorg captcha UPGRADE

Affected: < 8.x-1.17 · >= 2.0.0 and < 2.0.10

Fixed in: 2.0.10, 8.x-1.17

Safe to downgrade to: a release before 2.0.0

1. Check installed version

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

2. UPGRADE to 2.0.10 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade captcha

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 2.0.0 (Debian / Ubuntu)

apt-cache madison captcha sudo apt install captcha=<VERSION_BEFORE_2.0.0> sudo apt-mark hold captcha

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

dnf --showduplicates list captcha sudo dnf downgrade captcha-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add captcha

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-2026-3214?

captcha: upgrade to 2.0.10, 8.x-1.17. Exact commands for each OS are on this page.

Is CVE-2026-3214 being exploited?

CVE-2026-3214 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-2026-3214 affect?

CVE-2026-3214 affects captcha. Severity is medium (CVSS 6.5). Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal CAPTCHA allows Functionality Bypass.This issue affects CAPTCHA: from 0.0.0 before 1.17.0, from 2.0.0 before 2.0.10.

How urgent is CVE-2026-3214?

Priority 33/100. Remotely exploitable, no login, no user action

Software pages

Drupal vulnerabilities

References

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