CVE-2026-58402

MEDIUMNVD 5.45.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2026-41904 (ENISA EUVD)Source: ENISA EUVD

5.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out of the attribute and injects a live script element. This issue is fixed in 0.163.3.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity54% × 45%
Impact severity (EG Severity): CVSS 5.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.4): severity, escalated by confirmed exploitation. This CVE's 5.4 is its impact severity (EG Severity), not escalated.

EG Severity
5.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 6, 2026

Last Modified

October 25, 2026

Advisory Details (4)

Auto-updated Jul 7, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

XSS via unescaped code-fence language in default code block renderer · Advisory · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6
GitHub release Patch Available

v0.163.3

Patch available: gohugoio/hugo v0.163.3

https://github.com/gohugoio/hugo/releases/tag/v0.163.3
GitHub pull request

markup/highlight: Escape lang in default code block rendering

Fix merged in gohugoio/hugo PR #15051 on 2026-06-18 — awaiting tagged release

https://github.com/gohugoio/hugo/pull/15051
GitHub commit

commit ce1a7e0bce37 (gohugoio/hugo)

Fix landed in gohugoio/hugo commit ce1a7e0bce37 — awaiting tagged release

https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d

Vendor Advisories for CVE-2026-58402(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhathugo-main-0.163.3-0.1.hum12026-07-08redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
hugo0.100.1-1 ... 0.99.1-1 (146 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
hugo0.111.3-1 ... 0.167.0-2 (87 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
hugo0.131.0-1 ... 0.167.0-2 (50 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
hugo0.131.0-1 ... 0.162.1-7 (43 versions)
  • every version up to 0.165.0-1: fixed in 0.165.0-1
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/gohugoio/hugo—
  • 0.60.0 up to 0.163.3: fixed in 0.163.3
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 41× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 205 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 105 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  3. 2026-10-25 20:27 UTCEG score recompute
  4. 2026-10-25 20:27 UTCVendor advisory
  5. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  6. 2026-10-25 14:16 UTCEG score recompute
  7. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-10-22 21:01 UTCEG score recompute
  10. 2026-10-22 21:01 UTCVendor advisory
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-10-18 03:28 UTCEG score recompute
  17. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-13 13:54 UTCOSV refresh
  23. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-10-12 15:53 UTCEG score recompute
  25. 2026-10-11 19:36 UTCEG score recompute
Show 75 more
  1. 2026-10-11 16:52 UTCEG score recompute
  2. 2026-10-11 14:14 UTCEG score recompute
  3. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  6. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  7. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  8. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  11. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  12. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  14. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  15. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-23 06:23 UTCEG score recompute
  22. 2026-09-23 06:23 UTCVendor advisory
  23. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  25. 2026-09-18 05:59 UTCEG score recompute
  26. 2026-09-18 05:59 UTCVendor advisory
  27. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  28. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  31. 2026-09-14 11:40 UTCEG score recompute
  32. 2026-09-14 11:40 UTCVendor advisory
  33. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  34. 2026-09-13 12:00 UTCEG score recompute
  35. 2026-09-13 12:00 UTCVendor advisory
  36. 2026-09-12 13:37 UTCEG score recompute
  37. 2026-09-12 13:37 UTCVendor advisory
  38. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  42. 2026-09-05 23:11 UTCEG score recompute
  43. 2026-09-05 23:11 UTCVendor advisory
  44. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  46. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  47. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  48. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  49. 2026-08-30 08:14 UTCEG score recompute
  50. 2026-08-30 08:14 UTCVendor advisory
  51. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  53. 2026-08-27 21:58 UTCEG score recompute
  54. 2026-08-27 21:58 UTCVendor advisory
  55. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  56. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  57. 2026-08-26 13:55 UTCEG score recompute
  58. 2026-08-26 13:55 UTCVendor advisory
  59. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  60. 2026-08-24 20:48 UTCEG score recompute
  61. 2026-08-24 20:48 UTCVendor advisory
  62. 2026-08-23 20:06 UTCEG score recompute
  63. 2026-08-23 20:06 UTCVendor advisory
  64. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  65. 2026-08-22 21:43 UTCEG score recompute
  66. 2026-08-22 21:43 UTCVendor advisory
  67. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  68. 2026-08-21 23:20 UTCVendor advisory
  69. 2026-08-21 00:51 UTCEG score recompute
  70. 2026-08-21 00:51 UTCVendor advisory
  71. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  72. 2026-08-20 02:28 UTCEG score recompute
  73. 2026-08-20 02:28 UTCVendor advisory
  74. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  75. 2026-08-19 02:12 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58402?
CVE-2026-58402 is a medium-severity vulnerability; its CVE record was published on July 6, 2026. Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out…
When was the CVE record for CVE-2026-58402 published?
The CVE record for CVE-2026-58402 was published on July 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-58402 actively exploited?
CVE-2026-58402 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58402?
CVE-2026-58402 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-58402?
A fix for CVE-2026-58402 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58402 are linked in the Vendor Advisories panel on this page.

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