CVE-2026-96877

MEDIUMPre-NVD 6.96.9
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (27th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-87318 (ENISA EUVD) · GHSA-pq69-hr22-vjxq (GitHub Security Advisories)Source: ENISA EUVD

6.9EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.9Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (The Wikimedia Foundation) lists The Wikimedia Foundation Mediawiki - Cargo extension versions up to and including 3.9.4 as affected. No release containing a fix is confirmed on record.

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS.

This issue affects Mediawiki - Cargo extension: through 3.9.4.

CVSS
6.9
EG Score
6.9MEDIUMmedium confidence
EG Risk
46
EG Risk 46/100

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)
Severity69% × 45%
Impact severity (EG Severity): CVSS 6.9 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.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
27th
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 (6.9): severity, escalated by confirmed exploitation. This CVE's 6.9 is its impact severity (EG Severity), not escalated.

EG Severity
6.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

September 25, 2026

Last Modified

September 29, 2026

Advisory Details (1)

Auto-updated Sep 25, 2026
No fix on record yet.

Vendor Advisories for CVE-2026-96877(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 31× 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 its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS → 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

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 95 is merged into the row it repeats.

  1. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  2. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  3. 2026-11-10 16:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  5. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  6. 2026-11-07 19:05 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq · GitHub severity MODERATE
  7. 2026-11-07 19:05 UTCEchelonGraph re-scored
  8. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  9. 2026-11-06 16:40 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  10. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  11. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  12. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  13. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  14. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  15. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  16. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  17. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  18. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  19. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  20. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  21. 2026-10-25 13:48 UTCEchelonGraph re-scored
  22. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  23. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  24. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  25. 2026-10-22 12:14 UTCEchelonGraph re-scored
Show 69 more
  1. 2026-10-22 12:14 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  2. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  3. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  4. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  5. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  6. 2026-10-18 02:57 UTCEchelonGraph re-scored
  7. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  8. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  9. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  10. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  11. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  12. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  13. 2026-10-12 14:40 UTCEchelonGraph re-scored
  14. 2026-10-11 19:11 UTCEchelonGraph re-scored
  15. 2026-10-11 16:26 UTCEchelonGraph re-scored
  16. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  17. 2026-10-11 13:39 UTCEchelonGraph re-scored
  18. 2026-10-11 11:07 UTCEchelonGraph re-scored
  19. 2026-10-11 11:07 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  21. 2026-10-10 09:58 UTCEchelonGraph re-scored
  22. 2026-10-10 09:58 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  23. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  24. 2026-10-09 08:54 UTCEchelonGraph re-scored
  25. 2026-10-09 08:54 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  26. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  27. 2026-10-08 07:48 UTCEchelonGraph re-scored
  28. 2026-10-08 07:47 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  29. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  30. 2026-10-07 06:43 UTCEchelonGraph re-scored
  31. 2026-10-07 06:43 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  32. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  33. 2026-10-06 05:38 UTCEchelonGraph re-scored
  34. 2026-10-06 05:38 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  35. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  36. 2026-10-05 04:34 UTCEchelonGraph re-scored
  37. 2026-10-05 04:34 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  38. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  39. 2026-10-04 03:29 UTCEchelonGraph re-scored
  40. 2026-10-04 03:29 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  41. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  42. 2026-10-03 02:25 UTCEchelonGraph re-scored
  43. 2026-10-03 02:24 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  44. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  45. 2026-10-02 01:19 UTCEchelonGraph re-scored
  46. 2026-10-02 01:19 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  47. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  48. 2026-10-01 00:15 UTCEchelonGraph re-scored
  49. 2026-10-01 00:15 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  50. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  51. 2026-09-29 22:28 UTCEchelonGraph re-scored
  52. 2026-09-29 22:28 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  53. 2026-09-29 22:17 UTCEchelonGraph re-scored
  54. 2026-09-29 22:16 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  55. 2026-09-29 18:14 UTCEchelonGraph re-scored
  56. 2026-09-29 18:14 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  57. 2026-09-28 17:01 UTCEchelonGraph re-scored
  58. 2026-09-28 17:01 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  59. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  60. 2026-09-27 23:33 UTCEchelonGraph re-scored
  61. 2026-09-27 23:33 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  62. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  63. 2026-09-26 22:28 UTCEchelonGraph re-scored
  64. 2026-09-26 22:28 UTCGHSA enrichmentGHSA-pq69-hr22-vjxq
  65. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 15th percentile
  66. 2026-09-25 21:19 UTCEchelonGraph re-scored
  67. 2026-09-25 20:24 UTCEchelonGraph re-scored
  68. 2026-09-25 19:46 UTCEchelonGraph re-scoredFirst assessed: 6.9 MEDIUM
  69. 2026-09-25 19:45 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-96877?
CVE-2026-96877 is a medium-severity vulnerability; its CVE record was published on September 25, 2026. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS. This issue affects Mediawiki - Cargo extension: through 3.9.4.
When was CVE-2026-96877 made public?
CVE-2026-96877 was made public on September 25, 2026: that is the date its CVE record's CNA, The Wikimedia Foundation, gives for when the vulnerability was made public. The CVE record itself was published on September 25, 2026. EchelonGraph's copy of the record carries a last-modified date of September 29, 2026; the record at its source may have been updated since.
Is CVE-2026-96877 actively exploited?
CVE-2026-96877 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96877?
CVE-2026-96877 has a CVSS base score of 6.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-96877?
No fix for CVE-2026-96877 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (The Wikimedia Foundation) lists The Wikimedia Foundation Mediawiki - Cargo extension versions up to and including 3.9.4 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-96877 are linked in the Vendor Advisories panel on this page.

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