CVE-2022-29221

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 4.8%, top 9% 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
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 8.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing a malicious {block} name or {include} file name. Sites that cannot fully trust template authors should upgrade to versions 3.1.45 or 4.1.1 to receive a patch for this issue. There are currently no known workarounds.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
92%
KEV
Not listed

Published

May 24, 2022

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Aug 27, 2026
Patch available. Sources: github_commit, github_release, github.
github_commit Patch Available

commit 64ad6442ca1d (smarty-php/smarty)

Patch available: smarty-php/smarty v4.5.1 (contains commit 64ad6442ca1d)

https://github.com/smarty-php/smarty/commit/64ad6442ca1da31cefdab5c9874262b702cccddd
generic

[SECURITY] [DSA 5151-1] smarty3 security update

https://www.debian.org/security/2022/dsa-5151
generic

Smarty: Multiple vulnerabilities (GLSA 202209-09) — Gentoo security

https://security.gentoo.org/glsa/202209-09
generic

[SECURITY] Fedora 36 Update: php-Smarty-3.1.47-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
generic

[SECURITY] Fedora 37 Update: php-Smarty-3.1.47-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
generic Patch Available

[SECURITY] [DLA 3033-1] smarty3 security update

https://lists.debian.org/debian-lts-announce/2022/05/msg00044.html
github Patch Available

PHP Code Injection by malicious block or filename · Advisory · smarty-php/smarty · GitHub

https://github.com/smarty-php/smarty/security/advisories/GHSA-634x-pc3q-cf4c
github_release Patch Available

v4.1.1

Patch available: smarty-php/smarty v4.1.1

https://github.com/smarty-php/smarty/releases/tag/v4.1.1
github_release Patch Available

v3.1.45

Patch available: smarty-php/smarty v3.1.45

https://github.com/smarty-php/smarty/releases/tag/v3.1.45

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntusmarty3 (3.1.39-2ubuntu1.22.10.1) @ kinetic2026-05-25ubuntu
ubuntupostfixadmin (3.0.2-2ubuntu0.1~esm1) @ bionic2026-05-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(10 across 7 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
smarty3—3.1.45-1—
smarty4—4.1.1-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
smarty3—3.1.45-1—
smarty4—4.1.1-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
smarty3—3.1.45-1—
smarty4—4.1.1-1—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
smarty33.1.33+20180830.1.3a78a21f+selfpack1-13.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
smarty33.1.39-1, 3.1.39-23.1.39-2+deb11u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
smarty33.1.31+20161214.1.c7d42e4+selfpack1-2 ... 3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u5 (6 versions)3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u6—
Packagist(1)
PackageVulnerable rangeFixed inDependents
smarty/smartyv4.0.0 ... v4.1.0 (6 versions)4.1.1—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× 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.

Showing the most recent 100 of 164 total refreshes for this CVE.

  1. 2026-09-24 21:46 UTCOSV refresh
  2. 2026-09-24 14:00 UTCEPSS rescore
  3. 2026-09-23 13:45 UTCEPSS rescore
  4. 2026-09-22 14:44 UTCEPSS rescore
  5. 2026-09-19 15:38 UTCEPSS rescore
  6. 2026-09-18 19:24 UTCEPSS rescore
  7. 2026-09-16 14:05 UTCEPSS rescore
  8. 2026-09-15 03:06 UTCEPSS rescore
  9. 2026-09-12 14:57 UTCEPSS rescore
  10. 2026-09-11 14:49 UTCEPSS rescore
  11. 2026-09-11 09:33 UTCEPSS rescore
  12. 2026-09-08 21:57 UTCEPSS rescore
  13. 2026-09-07 15:58 UTCEPSS rescore
  14. 2026-09-06 13:45 UTCEPSS rescore
  15. 2026-09-05 15:25 UTCEPSS rescore
  16. 2026-09-05 13:55 UTCOSV refresh
  17. 2026-09-04 13:57 UTCEPSS rescore
  18. 2026-09-04 13:57 UTCEPSS rescore
  19. 2026-09-04 05:04 UTCEPSS rescore
  20. 2026-09-02 14:09 UTCEPSS rescore
  21. 2026-09-01 13:51 UTCEPSS rescore
  22. 2026-08-30 19:14 UTCEPSS rescore
  23. 2026-08-30 01:19 UTCEPSS rescore
  24. 2026-08-28 21:38 UTCEPSS rescore
  25. 2026-08-27 14:22 UTCEPSS rescore
Show 75 more
  1. 2026-08-26 14:43 UTCEPSS rescore
  2. 2026-08-25 13:46 UTCEPSS rescore
  3. 2026-08-24 14:13 UTCEPSS rescore
  4. 2026-08-23 00:16 UTCEPSS rescore
  5. 2026-08-21 23:46 UTCEPSS rescore
  6. 2026-08-20 22:52 UTCEPSS rescore
  7. 2026-08-19 17:01 UTCEPSS rescore
  8. 2026-08-19 00:29 UTCOSV refresh
  9. 2026-08-18 13:45 UTCEPSS rescore
  10. 2026-08-17 13:44 UTCEPSS rescore
  11. 2026-08-16 14:53 UTCEPSS rescore
  12. 2026-08-16 02:11 UTCEPSS rescore
  13. 2026-08-15 01:27 UTCEPSS rescore
  14. 2026-08-13 21:57 UTCEPSS rescore
  15. 2026-08-12 13:48 UTCEPSS rescore
  16. 2026-08-11 13:38 UTCEPSS rescore
  17. 2026-08-09 13:44 UTCEPSS rescore
  18. 2026-08-08 16:34 UTCEPSS rescore
  19. 2026-08-07 16:24 UTCEPSS rescore
  20. 2026-08-06 13:44 UTCEPSS rescore
  21. 2026-08-05 19:15 UTCEPSS rescore
  22. 2026-08-04 15:07 UTCEPSS rescore
  23. 2026-08-04 10:35 UTCEPSS rescore
  24. 2026-08-03 19:57 UTCOSV refresh
  25. 2026-08-03 10:33 UTCEPSS rescore
  26. 2026-08-02 02:24 UTCEPSS rescore
  27. 2026-08-01 04:13 UTCEPSS rescore
  28. 2026-07-30 16:25 UTCEPSS rescore
  29. 2026-07-30 01:28 UTCEPSS rescore
  30. 2026-07-28 15:33 UTCEPSS rescore
  31. 2026-07-26 14:52 UTCEPSS rescore
  32. 2026-07-25 14:15 UTCEPSS rescore
  33. 2026-07-24 14:15 UTCEPSS rescore
  34. 2026-07-24 14:15 UTCEPSS rescore
  35. 2026-07-23 14:16 UTCEPSS rescore
  36. 2026-07-23 14:16 UTCEPSS rescore
  37. 2026-07-23 02:10 UTCEG score recompute
  38. 2026-07-22 22:57 UTCEG score recompute
  39. 2026-07-22 14:06 UTCEPSS rescore
  40. 2026-07-22 14:06 UTCEPSS rescore
  41. 2026-07-21 15:22 UTCEPSS rescore
  42. 2026-07-21 15:22 UTCEPSS rescore
  43. 2026-07-20 17:05 UTCEPSS rescore
  44. 2026-07-19 14:29 UTCEPSS rescore
  45. 2026-07-19 02:27 UTCEPSS rescore
  46. 2026-07-19 02:27 UTCEPSS rescore
  47. 2026-07-18 10:03 UTCEPSS rescore
  48. 2026-07-18 10:02 UTCEPSS rescore
  49. 2026-07-17 10:29 UTCOSV refresh
  50. 2026-07-16 17:00 UTCEPSS rescore
  51. 2026-07-15 16:56 UTCEPSS rescore
  52. 2026-07-15 16:56 UTCEPSS rescore
  53. 2026-07-15 01:58 UTCEPSS rescore
  54. 2026-07-15 01:58 UTCEPSS rescore
  55. 2026-07-13 22:27 UTCEPSS rescore
  56. 2026-07-13 06:11 UTCEPSS rescore
  57. 2026-07-13 06:11 UTCEPSS rescore
  58. 2026-07-12 05:44 UTCEPSS rescore
  59. 2026-07-12 05:44 UTCEPSS rescore
  60. 2026-07-11 08:25 UTCEPSS rescore
  61. 2026-07-11 08:25 UTCEPSS rescore
  62. 2026-07-09 19:07 UTCEPSS rescore
  63. 2026-07-08 15:12 UTCEPSS rescore
  64. 2026-07-07 13:44 UTCEPSS rescore
  65. 2026-07-06 16:25 UTCEPSS rescore
  66. 2026-07-06 16:25 UTCEPSS rescore
  67. 2026-07-06 02:21 UTCEPSS rescore
  68. 2026-07-06 02:21 UTCEPSS rescore
  69. 2026-07-05 02:28 UTCEPSS rescore
  70. 2026-07-05 02:28 UTCEPSS rescore
  71. 2026-07-04 06:29 UTCEPSS rescore
  72. 2026-07-04 06:29 UTCEPSS rescore
  73. 2026-07-01 15:04 UTCEPSS rescore
  74. 2026-06-30 23:20 UTCEPSS rescore
  75. 2026-06-30 23:20 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsbani/CVE-2022-29221-PoC
    First seen May 25, 2022

    CVE-2022-29221 Proof of Concept Code - Smarty RCE

    Open source ↗

Related CVEs

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Frequently asked(5)

What is CVE-2022-29221?
CVE-2022-29221 is a high vulnerability published on May 24, 2022. Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing a malicious {block} name or {include} file name. Sites that cannot fully trust template authors…
When was CVE-2022-29221 disclosed?
CVE-2022-29221 was first published in the National Vulnerability Database on May 24, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-29221 actively exploited?
CVE-2022-29221 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.2% of all scored CVEs.
What is the CVSS score of CVE-2022-29221?
CVE-2022-29221 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2022-29221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-29221, 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-2022-29221

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