CVE-2026-78638

LOWPre-NVD 3.33.3
EchelonGraph scoreMEDIUM confidence

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

Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-08-25. A secondary CVSS source baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
3.3EG
EchelonGraph verdictPlan mitigationRemediate 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: 0.2%CVSS: 3.3Exploit: No code on recordExposed 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 description, written by its CNA (VulDB), states the affected versions: "A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0." No release containing a fix is confirmed on record.

A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0. This affects the function unzip of the file dist/index.js of the component Archive Extraction. Executing a manipulation of the argument destination can lead to path traversal. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
3.3
EG Score
3.3LOWmedium confidence
EG Risk
31
EG Risk 31/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity33% × 45%
The EG Score, 3.3 of 10.
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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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

August 25, 2026

Last Modified

September 28, 2026

References (6)

Vendor Advisories for CVE-2026-78638(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 14× in last 7d / 51× 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.

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. 4 repeat rows among the latest 92 are merged into the row they repeat.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-12 15:36 UTCEG score recompute
  5. 2026-10-11 19:22 UTCEG score recompute
  6. 2026-10-11 16:38 UTCEG score recompute
  7. 2026-10-11 13:57 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-10 12:22 UTCEG score recompute
  11. 2026-10-10 12:22 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-10-07 11:00 UTCEG score recompute
  16. 2026-10-07 11:00 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-04 16:01 UTCEG score recompute
  21. 2026-10-04 16:01 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-01 20:58 UTCEG score recompute
  24. 2026-10-01 20:58 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 63 more
  1. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-09-28 23:17 UTCEG score recompute
  3. 2026-09-28 23:17 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  4. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-09-27 10:58 UTCEG score recompute
  7. 2026-09-27 10:58 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  8. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-09-24 15:37 UTCEG score recompute
  11. 2026-09-24 15:37 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  12. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-09-21 20:38 UTCEG score recompute
  17. 2026-09-21 20:38 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  18. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-09-19 01:39 UTCEG score recompute
  20. 2026-09-19 01:38 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  23. 2026-09-16 06:40 UTCEG score recompute
  24. 2026-09-16 06:40 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  27. 2026-09-13 11:41 UTCEG score recompute
  28. 2026-09-13 11:41 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  29. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-09-10 16:42 UTCEG score recompute
  31. 2026-09-10 16:42 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  32. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-09-07 21:43 UTCEG score recompute
  34. 2026-09-07 21:43 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  35. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-05 02:44 UTCEG score recompute
  37. 2026-09-05 02:44 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  38. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-02 07:43 UTCEG score recompute
  41. 2026-09-02 07:43 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  42. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  43. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  45. 2026-08-30 12:39 UTCEG score recompute
  46. 2026-08-30 12:39 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  47. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-08-27 17:36 UTCEG score recompute
  50. 2026-08-27 17:36 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  51. 2026-08-27 17:23 UTCNVD updateCVSS v4 → 1.9
  52. 2026-08-27 17:14 UTCEG score recompute
  53. 2026-08-27 17:14 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  54. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v4 → 4.8
  55. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-08-26 16:44 UTCEG score recompute
  57. 2026-08-26 16:44 UTCGHSA enrichmentGHSA-5jh7-c63f-jp85 · GitHub severity LOW · GitHub CVSS 3.3
  58. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  59. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  60. 2026-08-25 06:28 UTCEG score recompute
  61. 2026-08-25 06:26 UTCNVD updateCVSS v4 → 1.9
  62. 2026-08-25 05:45 UTCEG score recomputeFirst assessed: 3.3 LOW
  63. 2026-08-25 05:45 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-78638?
CVE-2026-78638 is a low-severity vulnerability; its CVE record was published on August 25, 2026. A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0. This affects the function unzip of the file dist/index.js of the component Archive Extraction. Executing a manipulation of the argument destination can lead to path traversal. The attack can only be executed locally. The…
When was the CVE record for CVE-2026-78638 published?
The CVE record for CVE-2026-78638 was published on August 25, 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 September 28, 2026; the record at its source may have been updated since.
Is CVE-2026-78638 actively exploited?
CVE-2026-78638 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78638?
CVE-2026-78638 has a CVSS base score of 3.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-78638?
No fix for CVE-2026-78638 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 description, written by its CNA (VulDB), states the affected versions: "A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-78638 are linked in the Vendor Advisories panel on this page.

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