CVE-2020-7993: Prototype 1.6.0.1 allows remote authenticated users to forge ticket creation (on behalf of other user accounts

Routine

MEDIUM 4.3DOWNGRADE

CVE-2020-7993 is a medium-severity flaw (CVSS 4.3) affecting prototype. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Prototype 1.6.0.1 allows remote authenticated users to forge ticket creation (on behalf of other user accounts) via a modified email ID field.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-862
Published	2020-02-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: prototypejs

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

Am I affected?

Timeline

2020-02-03 15:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

prototypejs prototype DOWNGRADE

Affected: 1.6.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.6.0.1 (Debian / Ubuntu)

apt-cache madison prototype sudo apt install prototype=<VERSION_BEFORE_1.6.0.1> sudo apt-mark hold prototype

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

dnf --showduplicates list prototype sudo dnf downgrade prototype-<VERSION_BEFORE_1.6.0.1> sudo dnf versionlock add prototype

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-2020-7993?

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

Is CVE-2020-7993 being exploited?

CVE-2020-7993 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-2020-7993 affect?

CVE-2020-7993 affects prototype. Severity is medium (CVSS 4.3). Prototype 1.6.0.1 allows remote authenticated users to forge ticket creation (on behalf of other user accounts) via a modified email ID field.

How urgent is CVE-2020-7993?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2020-27511 HIGH 7.5 DOWNGRADE An issue was discovered in the stripTags and unescapeHTML components in Prototype 1.7.3 where an attacker can

References

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