CVE-2018-1000125: inversoft prime-jwt version prior to version 1.3.0 or prior to commit 0d94dcef0133d699f21d217e922564adbb83a227

Q: How do I fix CVE-2018-1000125?

prime-jwt: upgrade to 1.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-1000125 being exploited?

CVE-2018-1000125 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-2018-1000125 affect?

CVE-2018-1000125 affects prime-jwt. Severity is critical (CVSS 9.8). inversoft prime-jwt version prior to version 1.3.0 or prior to commit 0d94dcef0133d699f21d217e922564adbb83a227 contains an input validation vulnerability in JWTDecoder.decode that can result in a JWT that is decoded and thus implicitly vali

Q: How urgent is CVE-2018-1000125?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-1000125 is a critical-severity flaw (CVSS 9.8) affecting prime-jwt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

inversoft prime-jwt version prior to version 1.3.0 or prior to commit 0d94dcef0133d699f21d217e922564adbb83a227 contains an input validation vulnerability in JWTDecoder.decode that can result in a JWT that is decoded and thus implicitly validated even if it lacks a valid signature. This attack appear to be exploitable via an attacker crafting a token with a valid header and body and then requests it to be validated. This vulnerability appears to h

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-03-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: inversoft

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

Am I affected?

Timeline

2018-03-13 21:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

inversoft prime-jwt UPGRADE

Affected: < 1.3.0

Fixed in: 1.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy prime-jwt || rpm -q prime-jwt || prime-jwt --version

2. UPGRADE to 1.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade prime-jwt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prime-jwt

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-2018-1000125?

prime-jwt: upgrade to 1.3.0. Exact commands for each OS are on this page.

Is CVE-2018-1000125 being exploited?

CVE-2018-1000125 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-2018-1000125 affect?

CVE-2018-1000125 affects prime-jwt. Severity is critical (CVSS 9.8). inversoft prime-jwt version prior to version 1.3.0 or prior to commit 0d94dcef0133d699f21d217e922564adbb83a227 contains an input validation vulnerability in JWTDecoder.decode that can result in a JWT that is decoded and thus implicitly vali

How urgent is CVE-2018-1000125?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-1000531 HIGH 7.5 UPGRADE inversoft prime-jwt version prior to commit abb0d479389a2509f939452a6767dc424bb5e6ba contains a CWE-20 vulnera

References

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