LTI 1.3 Tool Library is a library used for building IMS-certified LTI 1.3 tool providers in PHP. Prior to version 5.0, the Nonce Claim Value was not being validated against the nonce value sent in the Authentication Request. Users should upgrade to version 5.0 to receive a patch. There are currently no known workarounds.
CVE-2022-31158
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 46.7%
- KEV
- Not listed
Published
July 15, 2022
Last Modified
November 21, 2024
References (2)
- security-advisories@githubhttps://github.com/packbackbooks/lti-1-3-php-library/security/advisories/GHSA-5p73-qg2v-383h
- af854a3a-2127-422b-91ae-364da2661108https://github.com/packbackbooks/lti-1-3-php-library/security/advisories/GHSA-5p73-qg2v-383h
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| packbackbooks/lti-1-3-php-library | — | 5.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:25 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-25 18:52 UTCEG score recompute
- 2026-05-24 16:51 UTCEPSS rescore
Related CVEs(same CWE)
Same CWE
10 shownCWE-294
Frequently asked(5)
What is CVE-2022-31158?
When was CVE-2022-31158 disclosed?
Is CVE-2022-31158 actively exploited?
What is the CVSS score of CVE-2022-31158?
How do I remediate CVE-2022-31158?
Dependency Blast Radius
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