CVE-2022-30286: pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python sour

Q: How do I fix CVE-2022-30286?

pyscript: upgrade to newer than 2022-05-04. Exact commands for each OS are on this page.

Q: Is CVE-2022-30286 being exploited?

CVE-2022-30286 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-2022-30286 affect?

CVE-2022-30286 affects pyscript. Severity is high (CVSS 7.5). pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python source code.

Q: How urgent is CVE-2022-30286?

Priority 60/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2022-30286 is a high-severity flaw (CVSS 7.5) affecting pyscript. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python source code.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	13.6% (top 4%)
CISA exploited list	No
Published	2022-05-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pyscript

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

Am I affected?

Timeline

2022-05-09 12:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

pyscript pyscript UPGRADE

Affected: <= 2022-05-04

Fixed in: newer than 2022-05-04

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2022-05-04 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pyscript

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: PyScript - Read Remote Python Source Code

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-2022-30286?

pyscript: upgrade to newer than 2022-05-04. Exact commands for each OS are on this page.

Is CVE-2022-30286 being exploited?

CVE-2022-30286 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-2022-30286 affect?

CVE-2022-30286 affects pyscript. Severity is high (CVSS 7.5). pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python source code.

How urgent is CVE-2022-30286?

Priority 60/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

References

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