CVE-2018-18405: jQuery v2.2.2 allows XSS via a crafted onerror attribute of an IMG element

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MEDIUM 6.1DOWNGRADE

CVE-2018-18405 is a medium-severity flaw (CVSS 6.1) affecting jquery. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

jQuery v2.2.2 allows XSS via a crafted onerror attribute of an IMG element. NOTE: this vulnerability has been reported to be spam entry

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-04-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jquery

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

Am I affected?

Timeline

2020-04-22 18:15 UTCPublished CVE record published
2026-06-17 01:47 UTCUpdated Record last modified

jquery jquery DOWNGRADE

Affected: 2.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.2.2 (Debian / Ubuntu)

apt-cache madison jquery sudo apt install jquery=<VERSION_BEFORE_2.2.2> sudo apt-mark hold jquery

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jquery sudo dnf downgrade jquery-<VERSION_BEFORE_2.2.2> sudo dnf versionlock add jquery

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-2018-18405?

jquery: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-18405 being exploited?

CVE-2018-18405 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-2018-18405 affect?

CVE-2018-18405 affects jquery. Severity is medium (CVSS 6.1). jQuery v2.2.2 allows XSS via a crafted onerror attribute of an IMG element. NOTE: this vulnerability has been reported to be spam entry

How urgent is CVE-2018-18405?

Priority 41/100. No elevated risk signals yet.

Software pages

jQuery vulnerabilities

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References

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