CVE-2017-1000507: Canvs Canvas version 3.4.2 contains a Cross Site Scripting (XSS) vulnerability in User's details that can resu

Routine

MEDIUM 5.4DOWNGRADE

CVE-2017-1000507 is a medium-severity flaw (CVSS 5.4) affecting canvas. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Canvs Canvas version 3.4.2 contains a Cross Site Scripting (XSS) vulnerability in User's details that can result in denial of service and execution of javascript code.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cnvs

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

Am I affected?

Timeline

2018-02-09 23:29 UTCPublished CVE record published
2026-06-17 00:59 UTCUpdated Record last modified

cnvs canvas DOWNGRADE

Affected: 3.4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.4.2 (Debian / Ubuntu)

apt-cache madison canvas sudo apt install canvas=<VERSION_BEFORE_3.4.2> sudo apt-mark hold canvas

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

dnf --showduplicates list canvas sudo dnf downgrade canvas-<VERSION_BEFORE_3.4.2> sudo dnf versionlock add canvas

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-2017-1000507?

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

Is CVE-2017-1000507 being exploited?

CVE-2017-1000507 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-2017-1000507 affect?

CVE-2017-1000507 affects canvas. Severity is medium (CVSS 5.4). Canvs Canvas version 3.4.2 contains a Cross Site Scripting (XSS) vulnerability in User's details that can result in denial of service and execution of javascript code.

How urgent is CVE-2017-1000507?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2020-8215 HIGH 8.8 UPGRADE A buffer overflow is present in canvas version <= 1.6.9, which could lead to a Denial of Service or execution
CVE-2017-8298 MEDIUM 5.4 DOWNGRADE cnvs.io Canvas 3.3.0 has XSS in the title and content fields of a "Posts > Add New" action, and during creatio

References

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