CVE-2026-44642

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.3% (70th 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
Elevated

Also known asEUVD-2026-87137 (ENISA EUVD)Source: ENISA EUVD

8.1EG
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: 1.3%CVSS: 8.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_magic_quotes_gpc function exists, so PHP 8 and later concatenate an unauthenticated username directly into the upgrade authentication SQL query. When database upgrades are pending, a crafted query result can satisfy the status and password checks, set PHPWG_IN_UPGRADE, and authorize upgrade execution without valid administrator credentials. This can cause unauthorized database integrity changes and service disruption. This vulnerability is fixed in 16.4.0.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
52
EG Risk 52/100

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)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 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.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
1.3%
EPSS %ILE
70th
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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
1.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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, Track* at medium and Attend at high mission impact.

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 no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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 25, 2026

Advisory Details (4)

Auto-updated Sep 25, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

16.4.0

Patch available: Piwigo/Piwigo 16.4.0

https://github.com/Piwigo/Piwigo/releases/tag/16.4.0
GitHub commit

commit 2cfa7a3d194c (Piwigo/Piwigo)

Fix landed in Piwigo/Piwigo commit 2cfa7a3d194c — awaiting tagged release

https://github.com/Piwigo/Piwigo/commit/2cfa7a3d194c8b95edde43038d8f5be5a359e785
GitHub commit Patch Available

commit 1ff9d04534fe (Piwigo/Piwigo)

Patch available: Piwigo/Piwigo 16.4.0 (contains commit 1ff9d04534fe)

https://github.com/Piwigo/Piwigo/commit/1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba
GitHub advisoryMentions a patch (unverified)

SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+) · Advisory · Piwigo/Piwigo · GitHub

https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 45× 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.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 1.3% · 70th percentile
  7. 2026-10-27 18:45 UTCEG score recompute
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  10. 2026-10-25 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-10-25 14:27 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  17. 2026-10-19 17:56 UTCEG score recompute
  18. 2026-10-19 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  19. 2026-10-18 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  20. 2026-10-18 03:39 UTCEG score recompute
  21. 2026-10-17 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  22. 2026-10-16 16:42 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
Show 37 more
  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  2. 2026-10-12 15:59 UTCEG score recompute
  3. 2026-10-11 19:47 UTCEG score recompute
  4. 2026-10-11 17:01 UTCEG score recompute
  5. 2026-10-11 13:52 UTCEG score recompute
  6. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  7. 2026-10-11 01:25 UTCEG score recompute
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  9. 2026-10-10 00:36 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-10-08 23:02 UTCEG score recompute
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  13. 2026-10-08 10:51 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  15. 2026-10-06 22:16 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  17. 2026-10-05 21:47 UTCEG score recompute
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  19. 2026-10-05 09:36 UTCEG score recompute
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  21. 2026-10-03 21:02 UTCEG score recompute
  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  23. 2026-10-02 20:38 UTCEG score recompute
  24. 2026-10-01 20:09 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  26. 2026-09-30 19:45 UTCEG score recompute
  27. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  28. 2026-09-29 19:20 UTCEG score recompute
  29. 2026-09-29 07:08 UTCEG score recompute
  30. 2026-09-28 18:54 UTCEG score recompute
  31. 2026-09-27 18:29 UTCEG score recompute
  32. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  33. 2026-09-26 18:06 UTCEG score recompute
  34. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  35. 2026-09-25 16:26 UTCEG score recompute
  36. 2026-09-25 15:54 UTCEG score recomputeFirst assessed: 8.1 HIGH
  37. 2026-09-25 15:54 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-44642?
CVE-2026-44642 is a high-severity vulnerability; its CVE record was published on September 25, 2026. Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_magic_quotes_gpc function exists, so PHP 8 and later concatenate…
When was the CVE record for CVE-2026-44642 published?
The CVE record for CVE-2026-44642 was published on September 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 25, 2026; the record at its source may have been updated since.
Is CVE-2026-44642 actively exploited?
CVE-2026-44642 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (70th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44642?
CVE-2026-44642 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-44642?
A fix for CVE-2026-44642 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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