CVE-2026-44483

HIGHNVD 8.28.2
EchelonGraph scoreMEDIUM confidence

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

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. NVD baseline CVSS 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2026-32564 (ENISA EUVD) · GHSA-c567-44rc-m5hq (GitHub Security Advisories)Source: ENISA EUVD

8.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 8.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

RVF (formerly Remix Validated Form) provides easy form validation and state management for React. From 6.0.0 to before 6.0.4 and 7.0.2, setPath in @rvf/set-get (used by @rvf/core to flatten incoming form data into a nested object) does not block the keys __proto__, constructor, or prototype when walking a path. Because field names in submitted form data are passed directly to setPath via preprocessFormData (and through parseFormData / validate), an attacker who can submit a form to a Remix / React Router app using the library can set arbitrary properties on Object.prototype of the running server process. This is a default-reachable prototype pollution primitive: no special configuration is required. Any endpoint that accepts a form via parseFormData or runs a validator created with createValidator is affected. This vulnerability is fixed in 6.0.4 and 7.0.2.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
68
EG Risk 68/100

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)
Severity82% × 45%
Impact severity (EG Severity): CVSS 8.2 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.
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 public PoC (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
30th
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 (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.

EG Severity
8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-08). 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.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).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (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.

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

May 27, 2026

Last Modified

October 26, 2026

Advisory Details (1)

Auto-updated Jun 3, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Prototype pollution in @rvf/set-get reachable via @rvf/core preprocessFormData (HTTP form data) · Advisory · airjp73/rvf · GitHub

https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq

Vendor Advisories for CVE-2026-44483(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npm@rvf/set-get @ 7.0.2 (fixes >= 7.0.0, < 7.0.2)—ghsa
npm@rvf/set-get @ 6.0.4 (fixes >= 6.0.0, < 6.0.4)—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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@rvf/set-get—
  • 7.0.0 up to 7.0.2: fixed in 7.0.2
  • 6.0.0 up to 6.0.4: fixed in 6.0.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× 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 its CVE.org record (CNA or CISA ADP). 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). "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.

Showing the most recent 100 of 211 rows 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 111 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-11-08 19:58 UTCEchelonGraph re-scored
  7. 2026-11-08 19:58 UTCGHSA enrichmentGHSA-c567-44rc-m5hq · GitHub severity HIGH · GitHub CVSS 8.2
  8. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  15. 2026-11-02 03:43 UTCEchelonGraph re-scored
  16. 2026-11-02 03:43 UTCGHSA enrichmentGHSA-c567-44rc-m5hq · GitHub severity HIGH · GitHub CVSS 8.2
  17. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-11-01 07:49 UTCGHSA enrichmentGHSA-c567-44rc-m5hq · GitHub severity HIGH · GitHub CVSS 8.2
  19. 2026-11-01 07:49 UTCEchelonGraph re-scored
  20. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
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  1. 2026-10-26 11:28 UTCEchelonGraph re-scored
  2. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-10-25 14:27 UTCEchelonGraph re-scored
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-24 06:13 UTCEchelonGraph re-scored
  6. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-18 03:39 UTCEchelonGraph re-scored
  13. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-17 13:58 UTCEchelonGraph re-scored
  15. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-12 16:05 UTCEchelonGraph re-scored
  21. 2026-10-11 19:47 UTCEchelonGraph re-scored
  22. 2026-10-11 17:01 UTCEchelonGraph re-scored
  23. 2026-10-11 14:27 UTCEchelonGraph re-scored
  24. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  27. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  28. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  29. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  30. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  31. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-10-03 16:49 UTCOSV refresh
  33. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  34. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  35. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  37. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  38. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  39. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  40. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  41. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  42. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  43. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  44. 2026-09-14 07:37 UTCEchelonGraph re-scored
  45. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  46. 2026-09-13 03:09 UTCOSV refresh
  47. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  48. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  49. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  50. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  51. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  52. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  53. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
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  59. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  60. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  61. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  62. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  63. 2026-08-25 05:13 UTCEchelonGraph re-scored
  64. 2026-08-23 14:57 UTCEchelonGraph re-scored
  65. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  66. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  67. 2026-08-21 01:28 UTCEchelonGraph re-scored
  68. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  69. 2026-08-20 11:15 UTCEchelonGraph re-scored
  70. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  71. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  72. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  73. 2026-08-16 16:23 UTCEchelonGraph re-scored
  74. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  75. 2026-08-16 02:48 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-44483?
CVE-2026-44483 is a high-severity vulnerability; its CVE record was published on May 27, 2026. RVF (formerly Remix Validated Form) provides easy form validation and state management for React. From 6.0.0 to before 6.0.4 and 7.0.2, setPath in @rvf/set-get (used by @rvf/core to flatten incoming form data into a nested object) does not block the keys proto, constructor, or prototype when…
When was the CVE record for CVE-2026-44483 published?
The CVE record for CVE-2026-44483 was published on May 27, 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 26, 2026; the record at its source may have been updated since.
Is CVE-2026-44483 actively exploited?
CVE-2026-44483 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44483?
CVE-2026-44483 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-44483?
A fix for CVE-2026-44483 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44483 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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