CVE-2018-1000086: NPR Visuals Team Pym.js version versions 0.4.2 up to 1.3.1 contains a Cross ite Request Forgery (CSRF) vulnera

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HIGH 8.8UPGRADE

CVE-2018-1000086 is a high-severity flaw (CVSS 8.8) affecting pym.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NPR Visuals Team Pym.js version versions 0.4.2 up to 1.3.1 contains a Cross ite Request Forgery (CSRF) vulnerability in Pym.js _onNavigateToMessage function. https://github.com/nprapps/pym.js/blob/master/src/pym.js#L573 that can result in Arbitrary javascript code execution. This attack appear to be exploitable via Attacker gains full javascript access to pages with Pym.js embeds when user visits an attacker crafted page.. This vulnerability appe

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-352
Published	2018-03-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: npr

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

Am I affected?

Timeline

2018-03-13 15:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

npr pym.js UPGRADE

Affected: >= 0.4.2 and <= 1.3.1

Fixed in: newer than 1.3.1

Safe to downgrade to: a release before 0.4.2

1. Check installed version

apt-cache policy pym.js || rpm -q pym.js || pym.js --version

2. UPGRADE to newer than 1.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pym.js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pym.js

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 0.4.2 (Debian / Ubuntu)

apt-cache madison pym.js sudo apt install pym.js=<VERSION_BEFORE_0.4.2> sudo apt-mark hold pym.js

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

dnf --showduplicates list pym.js sudo dnf downgrade pym.js-<VERSION_BEFORE_0.4.2> sudo dnf versionlock add pym.js

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-2018-1000086?

pym.js: upgrade to newer than 1.3.1. Exact commands for each OS are on this page.

Is CVE-2018-1000086 being exploited?

CVE-2018-1000086 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-2018-1000086 affect?

CVE-2018-1000086 affects pym.js. Severity is high (CVSS 8.8). NPR Visuals Team Pym.js version versions 0.4.2 up to 1.3.1 contains a Cross ite Request Forgery (CSRF) vulnerability in Pym.js _onNavigateToMessage function. https://github.com/nprapps/pym.js/blob/master/src/pym.js#L573 that can result in A

How urgent is CVE-2018-1000086?

Priority 47/100. High severity

Software pages

GitHub vulnerabilities

References

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