CVE-2026-78887

LOWPre-NVD 3.73.7
EchelonGraph scoreMEDIUM confidence

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

Score 3.7 from GitHub Security Advisory published 2026-08-25. A secondary CVSS source baseline 3.7; 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 week
3.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 3.7Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

A weakness has been identified in liketrek TREK up to 3.0.22. This impacts the function validateShareTokenForAsset of the component Journey Photo Proxy. Executing a manipulation can lead to incorrect authorization. The attack can be launched remotely. This attack is characterized by high complexity. The exploitability is said to be difficult. Upgrading to version 3.1.0 will fix this issue. You should upgrade the affected component.

CVSS v3
3.7
EG Score
3.7LOWmedium confidence
EG Risk
17
EG Risk 17/100

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)
Severity37% × 45%
The EG Score, 3.7 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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 referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (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

August 26, 2026

References (6)

Vendor Advisories for CVE-2026-78887(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 48× 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 83 are merged into the row they repeat.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-12 15:36 UTCEG score recompute
  4. 2026-10-11 19:22 UTCEG score recompute
  5. 2026-10-11 16:38 UTCEG score recompute
  6. 2026-10-11 13:57 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-08 03:20 UTCEG score recompute
  12. 2026-10-08 03:20 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-10-05 03:58 UTCEG score recompute
  17. 2026-10-05 03:58 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  20. 2026-10-02 09:57 UTCEG score recompute
  21. 2026-10-02 09:57 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  23. 2026-09-29 16:10 UTCEG score recompute
  24. 2026-09-29 16:09 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  25. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 37th percentile
Show 54 more
  1. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  3. 2026-09-26 22:07 UTCEG score recompute
  4. 2026-09-26 22:07 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  9. 2026-09-23 02:44 UTCEG score recompute
  10. 2026-09-23 02:44 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  11. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-09-20 08:56 UTCEG score recompute
  15. 2026-09-20 08:56 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  16. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  17. 2026-09-17 15:09 UTCEG score recompute
  18. 2026-09-17 15:09 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  19. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-09-14 21:22 UTCEG score recompute
  23. 2026-09-14 21:22 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  24. 2026-09-12 03:35 UTCEG score recompute
  25. 2026-09-12 03:35 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  26. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  27. 2026-09-09 09:48 UTCEG score recompute
  28. 2026-09-09 09:48 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  29. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  30. 2026-09-06 16:01 UTCEG score recompute
  31. 2026-09-06 16:01 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  32. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  33. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-09-03 22:14 UTCEG score recompute
  35. 2026-09-03 22:14 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  36. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  39. 2026-09-01 04:22 UTCEG score recompute
  40. 2026-09-01 04:21 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  41. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  42. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-08-29 10:34 UTCEG score recompute
  44. 2026-08-29 10:34 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  45. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  46. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  47. 2026-08-26 16:44 UTCEG score recompute
  48. 2026-08-26 16:44 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  49. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-08-25 18:28 UTCEG score recompute
  51. 2026-08-25 18:28 UTCGHSA enrichmentGHSA-j7mw-g2xq-7xfh · GitHub CVSS 3.7
  52. 2026-08-25 13:22 UTCEG score recompute
  53. 2026-08-25 12:52 UTCEG score recomputeFirst assessed: 3.7 LOW
  54. 2026-08-25 12:51 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-78887?
CVE-2026-78887 is a low-severity vulnerability; its CVE record was published on August 25, 2026. A weakness has been identified in liketrek TREK up to 3.0.22. This impacts the function validateShareTokenForAsset of the component Journey Photo Proxy. Executing a manipulation can lead to incorrect authorization. The attack can be launched remotely. This attack is characterized by high…
When was the CVE record for CVE-2026-78887 published?
The CVE record for CVE-2026-78887 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 August 26, 2026; the record at its source may have been updated since.
Is CVE-2026-78887 actively exploited?
CVE-2026-78887 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78887?
CVE-2026-78887 has a CVSS base score of 3.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-78887?
A fix for CVE-2026-78887 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-78887 are linked in the Vendor Advisories panel on this page.

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