CVE-2023-29453

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-10-12. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, 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.

Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to terminate the literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather complex, and themselves can do string interpolation, the decision was made to simply disallow Go template actions from being used inside of them (e.g., "var a = {{.}}"), since there is no obviously safe way to allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template. Parse returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is currently unexported but will be exported in the release of Go 1.21. Users who rely on the previous behavior can re-enable it using the GODEBUG flag jstmpllitinterp=1, with the caveat that backticks will now be escaped. This should be used with caution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

October 12, 2023

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Aug 7, 2026
No patch confirmed yet.
generic

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https://support.zabbix.com/browse/ZBX-23388

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
zabbix1:5.0.14+dfsg-1 ... 1:7.0.9+dfsg-1~bpo12+1 (46 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
zabbix1:6.0.14+dfsg-1 ... 1:7.0.9+dfsg-1~bpo12+1 (25 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
zabbix—1:6.0.23+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 50× 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 134 total refreshes for this CVE.

  1. 2026-08-09 13:44 UTCEPSS rescore
  2. 2026-08-08 16:34 UTCEPSS rescore
  3. 2026-08-07 16:24 UTCEPSS rescore
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  12. 2026-08-02 00:06 UTCOSV refresh
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  1. 2026-07-23 14:16 UTCEPSS rescore
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  3. 2026-07-23 02:21 UTCEG score recompute
  4. 2026-07-22 23:09 UTCEG score recompute
  5. 2026-07-22 14:06 UTCEPSS rescore
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  19. 2026-07-15 07:19 UTCOSV refresh
  20. 2026-07-15 01:58 UTCEPSS rescore
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  22. 2026-07-13 22:28 UTCEPSS rescore
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  24. 2026-07-13 06:11 UTCEPSS rescore
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  26. 2026-07-12 05:45 UTCEPSS rescore
  27. 2026-07-11 08:25 UTCEPSS rescore
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  29. 2026-07-09 19:08 UTCEPSS rescore
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  31. 2026-07-08 15:13 UTCEPSS rescore
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  41. 2026-06-29 14:05 UTCEPSS rescore
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  44. 2026-06-28 04:54 UTCEPSS rescore
  45. 2026-06-27 08:04 UTCOSV refresh
  46. 2026-06-27 03:07 UTCEPSS rescore
  47. 2026-06-25 13:48 UTCEPSS rescore
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  49. 2026-06-24 14:03 UTCEPSS rescore
  50. 2026-06-24 14:03 UTCEPSS rescore
  51. 2026-06-23 21:31 UTCEPSS rescore
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  69. 2026-06-13 22:59 UTCEPSS rescore
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  71. 2026-06-12 23:10 UTCEPSS rescore
  72. 2026-06-11 13:59 UTCEPSS rescore
  73. 2026-06-10 22:17 UTCEPSS rescore
  74. 2026-06-10 13:21 UTCEPSS rescore
  75. 2026-06-10 13:21 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-29453?
CVE-2023-29453 is a critical vulnerability published on October 12, 2023. Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to…
When was CVE-2023-29453 disclosed?
CVE-2023-29453 was first published in the National Vulnerability Database on October 12, 2023, 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-2023-29453 actively exploited?
CVE-2023-29453 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 48.5% of all scored CVEs.
What is the CVSS score of CVE-2023-29453?
CVE-2023-29453 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-29453?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-29453, 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.

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