CVE-2026-46633

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 53% 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, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Twig is a template language for PHP. Prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into the compiled cache file. This issue is fixed in version 3.26.0.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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 computed
Severity98% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

May 21, 2026

Last Modified

July 16, 2026

Advisory Details (4)

Auto-updated Aug 1, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

PHP code injection via `{% use %}` template name · Advisory · twigphp/Twig · GitHub

https://github.com/twigphp/Twig/security/advisories/GHSA-7p85-w9px-jpjp
github_release Patch Available

v3.26.0

Patch available: twigphp/Twig v3.26.0

https://github.com/twigphp/Twig/releases/tag/v3.26.0
github_commit Patch Available

commit e9ff55f69108 (twigphp/Twig)

Patch available: twigphp/Twig v3.26.0 (contains commit e9ff55f69108)

https://github.com/twigphp/Twig/commit/e9ff55f6910832428e48a35b2e0748189ad49ae3
github_commit Patch Available

commit 679447fa2908 (twigphp/Twig)

Patch available: twigphp/Twig v3.26.0 (contains commit 679447fa2908)

https://github.com/twigphp/Twig/commit/679447fa29083043665482ccf7d64372472621b8

Vendor Advisories for CVE-2026-46633(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)
Packagist(1)
PackageVulnerable rangeFixed inDependents
twig/twig1.3.0 ... v3.9.3 (242 versions)3.26.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 26× 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.

  1. 2026-08-01 17:23 UTCEG score recompute
  2. 2026-08-01 04:16 UTCEPSS rescore
  3. 2026-07-30 16:28 UTCEPSS rescore
  4. 2026-07-30 01:30 UTCEPSS rescore
  5. 2026-07-29 17:39 UTCEG score recompute
  6. 2026-07-28 15:36 UTCEPSS rescore
  7. 2026-07-27 14:13 UTCEPSS rescore
  8. 2026-07-26 14:54 UTCEPSS rescore
  9. 2026-07-26 14:54 UTCEPSS rescore
  10. 2026-07-25 14:18 UTCEPSS rescore
  11. 2026-07-24 14:17 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 03:17 UTCEG score recompute▲ 1.10
  14. 2026-07-22 14:08 UTCEPSS rescore
  15. 2026-07-21 15:24 UTCEPSS rescore
  16. 2026-07-20 17:08 UTCEPSS rescore
  17. 2026-07-19 14:31 UTCEPSS rescore
  18. 2026-07-19 02:29 UTCEPSS rescore
  19. 2026-07-18 10:04 UTCEPSS rescore
  20. 2026-07-16 17:03 UTCEPSS rescore
  21. 2026-07-16 06:26 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  22. 2026-07-16 04:28 UTCMITRE cvelistV5CVSS v3 → 8.7 · severity → HIGH
  23. 2026-07-15 20:58 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  24. 2026-07-15 16:57 UTCEPSS rescore
  25. 2026-07-14 21:36 UTCEG score recompute▲ 8.70
Show 5 more
  1. 2026-07-14 21:35 UTCMITRE cvelistV5CVSS v3 → 8.7 · CVSS v4 → 8.7 · severity → HIGH
  2. 2026-06-14 23:18 UTCEPSS rescore
  3. 2026-06-13 23:00 UTCEPSS rescore
  4. 2026-06-12 23:12 UTCEPSS rescore
  5. 2026-05-24 06:10 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46633?
CVE-2026-46633 is a critical vulnerability published on May 21, 2026. Twig is a template language for PHP. Prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into…
When was CVE-2026-46633 disclosed?
CVE-2026-46633 was first published in the National Vulnerability Database on May 21, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46633 actively exploited?
CVE-2026-46633 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.8% of all scored CVEs.
What is the CVSS score of CVE-2026-46633?
CVE-2026-46633 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-46633?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46633, 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

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