CVE-2026-44708

MEDIUMNVD 6.16.1
EchelonGraph scoreMEDIUM confidence

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

Score 6.1 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is explicitly created with escape=True, which is supposed to guarantee that all user-controlled text is sanitised before reaching the DOM. This vulnerability is fixed in 3.2.1.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100

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)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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
18th
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 (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-22). 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 low or medium mission impact; Track* at high (mission-essential systems).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 low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (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

May 8, 2026

Last Modified

July 24, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
Patch available. Sources: github_release, github.
GitHub advisoryMentions a patch (unverified)

Mistune Math Plugin XSS Escape Bypass · Advisory · lepture/mistune · GitHub

https://github.com/lepture/mistune/security/advisories/GHSA-8g87-j6q8-g93x
GitHub release Patch Available

v3.2.1

Patch available: lepture/mistune v3.2.1

https://github.com/lepture/mistune/releases/tag/v3.2.1

Vendor Advisories for CVE-2026-44708(2)

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
pipmistune—ghsa

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
mistune0.8.4-4 ... 3.1.4-1 (15 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
mistune2.0.4-1 ... 3.3.4-1 (7 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
mistune3.1.3-1, 3.1.4-1, 3.3.4-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
mistune3.1.3-1, 3.1.4-1, 3.3.4-1
  • every version on: no fix on record
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
mistune0.1.0 ... 3.2.0 (50 versions)
  • every version through 3.2.0: no fix on record
  • every version up to 3.2.1: fixed in 3.2.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 33× 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 215 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 115 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  2. 2026-10-22 23:44 UTCEG score recompute
  3. 2026-10-22 23:43 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  4. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  5. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  6. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  7. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  8. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  9. 2026-10-18 03:39 UTCEG score recompute
  10. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  11. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  12. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  13. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  14. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  15. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  16. 2026-10-12 16:05 UTCEG score recompute
  17. 2026-10-11 19:47 UTCEG score recompute
  18. 2026-10-11 17:01 UTCEG score recompute
  19. 2026-10-11 14:27 UTCEG score recompute
  20. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  22. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  23. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  24. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  25. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 17th percentile
Show 75 more
  1. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  3. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  4. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  6. 2026-09-30 07:28 UTCOSV refresh
  7. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  8. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  9. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  10. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  14. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  17. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-09-11 12:53 UTCOSV refresh
  19. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  23. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  27. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  28. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  31. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  33. 2026-08-23 18:51 UTCEG score recompute
  34. 2026-08-23 18:51 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  39. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-08-17 11:28 UTCEG score recompute
  42. 2026-08-17 11:28 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  43. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  44. 2026-08-16 04:32 UTCEG score recompute
  45. 2026-08-16 04:32 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  46. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-08-15 02:06 UTCEG score recompute
  48. 2026-08-15 02:06 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  49. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-08-14 03:06 UTCEG score recompute
  51. 2026-08-14 03:06 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  52. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-08-12 23:16 UTCEG score recompute
  54. 2026-08-12 23:16 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  55. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-12 00:15 UTCEG score recompute
  57. 2026-08-12 00:15 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  58. 2026-08-11 01:15 UTCEG score recompute
  59. 2026-08-11 01:15 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  60. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  61. 2026-08-10 01:23 UTCEG score recompute
  62. 2026-08-10 01:23 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  63. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  64. 2026-08-09 02:22 UTCEG score recompute
  65. 2026-08-09 02:22 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  66. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  67. 2026-08-07 20:08 UTCEG score recompute
  68. 2026-08-07 20:08 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  69. 2026-08-06 21:07 UTCEG score recompute
  70. 2026-08-06 21:07 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  71. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  72. 2026-08-05 22:06 UTCEG score recompute
  73. 2026-08-05 22:06 UTCGHSA enrichmentGHSA-8g87-j6q8-g93x · GitHub CVSS 6.1
  74. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  75. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Frequently asked(5)

What is CVE-2026-44708?
CVE-2026-44708 is a medium-severity vulnerability; its CVE record was published on May 8, 2026. Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is…
When was the CVE record for CVE-2026-44708 published?
The CVE record for CVE-2026-44708 was published on May 8, 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 July 24, 2026; the record at its source may have been updated since.
Is CVE-2026-44708 actively exploited?
CVE-2026-44708 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44708?
CVE-2026-44708 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-44708?
A fix for CVE-2026-44708 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44708 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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