CVE-2026-35201

MEDIUMNVD 5.95.9
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.4% (31st 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
Elevated
5.9EG
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: 0.4%CVSS: 5.9Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Discount is an implementation of John Gruber's Markdown markup language in C. From 1.3.1.1 to before 2.2.7.4, a signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT_MAX are truncated to a signed int before entering the native parser, allowing the parser to read past the end of the supplied buffer and crash the process. This vulnerability is fixed in 2.2.7.4.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium 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)
Severity59% × 45%
Impact severity (EG Severity): CVSS 5.9 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
0.4%
EPSS %ILE
31st
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 (5.9): severity, escalated by confirmed exploitation. This CVE's 5.9 is its impact severity (EG Severity), not escalated.

EG Severity
5.9 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
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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

April 6, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated Jul 25, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Out-of-bounds Read in rdiscount · Advisory · davidfstr/rdiscount · GitHub

https://github.com/davidfstr/rdiscount/security/advisories/GHSA-6r34-94wq-jhrc

Vendor Advisories for CVE-2026-35201(1)

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

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
discount2.2.6-1, 2.2.7-1, 2.2.7-2, 2.2.7-2.1
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
discount2.2.7-2, 2.2.7-2.1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
discount2.2.7-2.1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
discount2.2.7-2.1
  • every version on: no fix on record
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
rdiscount1.3.1.1 ... 2.2.7.3 (26 versions)
  • 1.3.1.1 up to 2.2.7.4: fixed in 2.2.7.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 99 of 213 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 114 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  3. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  4. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-18 03:45 UTCEG score recompute
  6. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  7. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  8. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-12 16:12 UTCEG score recompute
  13. 2026-10-11 19:54 UTCEG score recompute
  14. 2026-10-11 17:07 UTCEG score recompute
  15. 2026-10-11 14:34 UTCEG score recompute
  16. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-11 00:22 UTCOSV refresh
  18. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
Show 74 more
  1. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  5. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-09-21 12:19 UTCOSV refresh
  7. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  14. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  18. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  20. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  21. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  22. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-09-02 09:44 UTCOSV refresh
  24. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  25. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  26. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  27. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  28. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  30. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  32. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  33. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  34. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  35. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  36. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  37. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  38. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  39. 2026-08-16 08:22 UTCEG score recompute
  40. 2026-08-16 08:22 UTCVendor advisory
  41. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  43. 2026-08-14 05:30 UTCEG score recompute
  44. 2026-08-14 05:30 UTCVendor advisory
  45. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  46. 2026-08-13 01:15 UTCEG score recompute
  47. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  48. 2026-08-12 02:16 UTCEG score recompute
  49. 2026-08-12 02:16 UTCVendor advisory
  50. 2026-08-11 03:17 UTCEG score recompute
  51. 2026-08-11 03:17 UTCVendor advisory
  52. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  53. 2026-08-10 04:00 UTCEG score recompute
  54. 2026-08-10 04:00 UTCVendor advisory
  55. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  56. 2026-08-09 05:00 UTCEG score recompute
  57. 2026-08-09 05:00 UTCVendor advisory
  58. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  59. 2026-08-07 15:03 UTCEG score recompute
  60. 2026-08-07 15:03 UTCVendor advisory
  61. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  62. 2026-08-06 00:06 UTCEG score recompute
  63. 2026-08-06 00:06 UTCVendor advisory
  64. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  65. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  66. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  67. 2026-08-03 22:26 UTCEG score recompute
  68. 2026-08-03 22:26 UTCVendor advisory
  69. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  70. 2026-08-02 14:22 UTCEG score recompute
  71. 2026-08-02 14:22 UTCVendor advisory
  72. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  73. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  74. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 19th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-35201?
CVE-2026-35201 is a medium-severity vulnerability; its CVE record was published on April 6, 2026. Discount is an implementation of John Gruber's Markdown markup language in C. From 1.3.1.1 to before 2.2.7.4, a signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT_MAX are truncated to a signed int before entering the native parser,…
When was the CVE record for CVE-2026-35201 published?
The CVE record for CVE-2026-35201 was published on April 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 July 24, 2026; the record at its source may have been updated since.
Is CVE-2026-35201 actively exploited?
CVE-2026-35201 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35201?
CVE-2026-35201 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-35201?
A fix for CVE-2026-35201 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-35201 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35201

Explore →

Is Your Infrastructure Affected by CVE-2026-35201?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs