CVE-2020-8215: A buffer overflow is present in canvas version <= 1.6.9, which could lead to a Denial of Service or execution

This month

HIGH 8.8UPGRADE

CVE-2020-8215 is a high-severity flaw (CVSS 8.8) affecting canvas. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A buffer overflow is present in canvas version <= 1.6.9, which could lead to a Denial of Service or execution of arbitrary code when it processes a user-provided image.

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	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-120
Published	2020-07-20
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: automattic

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

Am I affected?

Timeline

2020-07-20 15:15 UTCPublished CVE record published
2026-06-17 03:26 UTCUpdated Record last modified

automattic canvas UPGRADE

Affected: <= 1.6.9

Fixed in: newer than 1.6.9

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls canvas

2. UPGRADE to newer than 1.6.9

npm install canvas@">1.6.9"

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-2020-8215?

canvas: upgrade to newer than 1.6.9. Exact commands for each OS are on this page.

Is CVE-2020-8215 being exploited?

CVE-2020-8215 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-2020-8215 affect?

CVE-2020-8215 affects canvas. Severity is high (CVSS 8.8). A buffer overflow is present in canvas version <= 1.6.9, which could lead to a Denial of Service or execution of arbitrary code when it processes a user-provided image.

How urgent is CVE-2020-8215?

Priority 52/100. High severity

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References

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