CVE-2019-15837: The webp-express plugin before 0.14.8 for WordPress has stored XSS.

Q: How do I fix CVE-2019-15837?

webp express: upgrade to 0.14.8. Exact commands for each OS are on this page.

Q: Is CVE-2019-15837 being exploited?

CVE-2019-15837 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-2019-15837 affect?

CVE-2019-15837 affects webp express. Severity is medium (CVSS 5.4). The webp-express plugin before 0.14.8 for WordPress has stored XSS.

Q: How urgent is CVE-2019-15837?

Priority 38/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2019-15837 is a medium-severity flaw (CVSS 5.4) affecting webp express. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The webp-express plugin before 0.14.8 for WordPress has stored XSS.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-08-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bitwise-it

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

Am I affected?

Timeline

2019-08-30 17:15 UTCPublished CVE record published
2026-06-17 02:21 UTCUpdated Record last modified

bitwise-it webp express UPGRADE

Affected: < 0.14.8

Fixed in: 0.14.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webp-express || rpm -q webp-express || webp-express --version

2. UPGRADE to 0.14.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webp-express

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webp-express

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-2019-15837?

webp express: upgrade to 0.14.8. Exact commands for each OS are on this page.

Is CVE-2019-15837 being exploited?

CVE-2019-15837 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-2019-15837 affect?

CVE-2019-15837 affects webp express. Severity is medium (CVSS 5.4). The webp-express plugin before 0.14.8 for WordPress has stored XSS.

How urgent is CVE-2019-15837?

Priority 38/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2019-15330 HIGH 7.5 UPGRADE The webp-express plugin before 0.14.11 for WordPress has insufficient protection against arbitrary file readin

References

← Back to latest CVEs