datamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2 and src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 are rendered into Python comments without neutralizing carriage returns in Python # comments, allowing attacker-controlled GraphQL schema content to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.1.
CVE-2026-54621
HIGHPre-NVD 7.87.8—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% 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).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EG Risk
- 35(Track)EG Risk 35/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity78% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 4%
- KEV
- Not listed
Published
July 28, 2026
Last Modified
July 29, 2026
Advisory Details (3)
Auto-updated Jul 28, 2026Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
0.60.1
Patch available: koxudaxi/datamodel-code-generator 0.60.1
https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.1github_commit Patch Available
commit aec47bc41477 (koxudaxi/datamodel-code-generator)
Patch available: koxudaxi/datamodel-code-generator 0.60.1 (contains commit aec47bc41477)
https://github.com/koxudaxi/datamodel-code-generator/commit/aec47bc414779f4a9992b3919c8f7663afd6c988github Patch Available
Code injection in `datamodel-code-generator` via unescaped carriage return in GraphQL Union description · Advisory · koxudaxi/datamodel-code-generator · GitHub
https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-j884-q54q-mmx3Vendor Advisories for CVE-2026-54621(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| datamodel-code-generator | 0.25.0 ... 0.60.0 (70 versions) | 0.60.1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× 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.
- 2026-07-30 01:51 UTCEG score recompute
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-29 13:19 UTCEG score recompute
- 2026-07-28 22:26 UTCEG score recompute
- 2026-07-28 21:55 UTCEG score recompute
- 2026-07-28 21:52 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-94
- CVE-2003-1432EG 10.0EPSS p94HIGH
- CVE-2002-0495EG 10.0EPSS p96HIGH
- CVE-1999-0702EG 10.0EPSS p98HIGH
- CVE-1999-0509EG 10.0EPSS p98HIGH
- CVE-2006-1318EG 9.3EPSS p96HIGH
- CVE-2006-1301EG 9.3EPSS p95HIGH
- CVE-2006-1308EG 9.3EPSS p95HIGH
- CVE-2006-1309EG 9.3EPSS p95HIGH
- CVE-2006-1304EG 9.3EPSS p95HIGH
- CVE-2006-1306EG 9.3EPSS p95HIGH
Frequently asked(5)
What is CVE-2026-54621?
CVE-2026-54621 is a high vulnerability published on July 28, 2026. datamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodelcodegenerator/model/template/UnionTypeStatement.jinja2 and src/datamodelcodegenerator/model/template/UnionTypeStatement.py312.jinja2 are rendered into…
When was CVE-2026-54621 disclosed?
CVE-2026-54621 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54621 actively exploited?
CVE-2026-54621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-54621?
CVE-2026-54621 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-54621?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54621, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54621
Is Your Infrastructure Affected by CVE-2026-54621?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.