CVE-2026-78187

LOWPre-NVD 3.13.1
EchelonGraph scoreMEDIUM confidence

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

Score 3.1 from GitHub Security Advisory (severity: LOW) published 2026-08-24. A secondary CVSS source baseline 3.1; 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
3.1EG
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: 0.7%CVSS: 3.1Exploit: No code on recordExposed 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 vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component.

CVSS v3
3.1
EG Score
3.1LOWmedium confidence
EG Risk
30
EG Risk 30/100

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)
Severity31% × 45%
The EG Score, 3.1 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: 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
0.7%
EPSS %ILE
50th
KEV
Not listed

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

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 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 24, 2026

Last Modified

August 24, 2026

References (9)

Vendor Advisories for CVE-2026-78187(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 86 are merged into the row they repeat.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  3. 2026-10-12 15:36 UTCEG score recompute
  4. 2026-10-11 19:23 UTCEG score recompute
  5. 2026-10-11 16:39 UTCEG score recompute
  6. 2026-10-11 13:57 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  9. 2026-10-10 13:16 UTCEG score recompute
  10. 2026-10-10 13:15 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  14. 2026-10-06 17:38 UTCEG score recompute
  15. 2026-10-06 17:38 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  19. 2026-10-03 16:34 UTCEG score recompute
  20. 2026-10-03 16:33 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  23. 2026-09-30 09:12 UTCEG score recompute
  24. 2026-09-30 09:12 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  25. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.7% · 49th percentile
Show 57 more
  1. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  3. 2026-09-27 08:07 UTCEG score recompute
  4. 2026-09-27 08:07 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  6. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  7. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  8. 2026-09-24 07:02 UTCEG score recompute
  9. 2026-09-24 07:02 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  10. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-09-21 05:56 UTCEG score recompute
  14. 2026-09-21 05:56 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  15. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-09-18 04:51 UTCEG score recompute
  18. 2026-09-18 04:51 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  19. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-09-15 03:46 UTCEG score recompute
  22. 2026-09-15 03:45 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  23. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-09-12 02:40 UTCEG score recompute
  25. 2026-09-12 02:40 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  26. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  27. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  28. 2026-09-09 01:35 UTCEG score recompute
  29. 2026-09-09 01:34 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  30. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  31. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  32. 2026-09-05 21:55 UTCEG score recompute
  33. 2026-09-05 21:55 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  34. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  35. 2026-09-02 20:49 UTCEG score recompute
  36. 2026-09-02 20:49 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  37. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  38. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  39. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  40. 2026-08-30 19:33 UTCEG score recompute
  41. 2026-08-30 19:33 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  42. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  43. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  44. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  45. 2026-08-27 18:28 UTCEG score recompute
  46. 2026-08-27 18:28 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  47. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  48. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  50. 2026-08-24 17:19 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  51. 2026-08-24 16:46 UTCEG score recompute
  52. 2026-08-24 16:46 UTCGHSA enrichmentGHSA-p4vh-hfqq-9prq · GitHub severity LOW · GitHub CVSS 3.1
  53. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  54. 2026-08-24 05:24 UTCEG score recompute
  55. 2026-08-24 05:23 UTCNVD updateCVSS v4 → 1.3
  56. 2026-08-24 04:51 UTCEG score recomputeFirst assessed: 3.1 LOW
  57. 2026-08-24 04:50 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-78187?
CVE-2026-78187 is a low-severity vulnerability; its CVE record was published on August 24, 2026. A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The…
When was the CVE record for CVE-2026-78187 published?
The CVE record for CVE-2026-78187 was published on August 24, 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 24, 2026; the record at its source may have been updated since.
Is CVE-2026-78187 actively exploited?
CVE-2026-78187 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78187?
CVE-2026-78187 has a CVSS base score of 3.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-78187?
A fix for CVE-2026-78187 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-2026-78187 are linked in the Vendor Advisories panel on this page.

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