CVE-2020-22882: Issue was discovered in the fxParserTree function in moddable, allows attackers to cause denial of service via

Q: How do I fix CVE-2020-22882?

moddable: upgrade to os200831. Exact commands for each OS are on this page.

Q: Is CVE-2020-22882 being exploited?

CVE-2020-22882 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-2020-22882 affect?

CVE-2020-22882 affects moddable. Severity is high (CVSS 7.5). Issue was discovered in the fxParserTree function in moddable, allows attackers to cause denial of service via a crafted payload. Fixed in commit 723816ab9b52f807180c99fc69c7d08cf6c6bd61.

Q: How urgent is CVE-2020-22882?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2020-22882 is a high-severity flaw (CVSS 7.5) affecting moddable. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Issue was discovered in the fxParserTree function in moddable, allows attackers to cause denial of service via a crafted payload. Fixed in commit 723816ab9b52f807180c99fc69c7d08cf6c6bd61.

Why this priority

High severity
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	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-843
Published	2021-07-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: moddable

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

Am I affected?

Timeline

2021-07-13 15:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

moddable moddable UPGRADE

Affected: < os200831

Fixed in: os200831

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to os200831 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade moddable

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-2020-22882?

moddable: upgrade to os200831. Exact commands for each OS are on this page.

Is CVE-2020-22882 being exploited?

CVE-2020-22882 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-2020-22882 affect?

CVE-2020-22882 affects moddable. Severity is high (CVSS 7.5). Issue was discovered in the fxParserTree function in moddable, allows attackers to cause denial of service via a crafted payload. Fixed in commit 723816ab9b52f807180c99fc69c7d08cf6c6bd61.

How urgent is CVE-2020-22882?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-29368 HIGH 7.1 UPGRADE Moddable commit before 135aa9a4a6a9b49b60aa730ebc3bcc6247d75c45 was discovered to contain an out-of-bounds rea
CVE-2021-29329 HIGH 7.8 DOWNGRADE OpenSource Moddable v10.5.0 was discovered to contain a stack overflow in the fxBinaryExpressionNodeDistribute
CVE-2021-29328 HIGH 7.1 DOWNGRADE OpenSource Moddable v10.5.0 was discovered to contain buffer over-read in the fxDebugThrow function at /moddab
CVE-2021-29327 HIGH 7.8 DOWNGRADE OpenSource Moddable v10.5.0 was discovered to contain a heap buffer overflow in the fx_ArrayBuffer function at
CVE-2021-29326 HIGH 7.8 DOWNGRADE OpenSource Moddable v10.5.0 was discovered to contain a heap buffer overflow in the fxIDToString function at /

References

← Back to latest CVEs