CVE-2026-16645

CRITICALPre-NVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
9.1EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Missing Authorization vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image Gallery allows Forceful Browsing. This issue affects PhotoSwipe - Responsive JavaScript Modal Image Gallery versions: from 0.0.0 to 3.2.0.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
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 none (CISA Vulnrichment) · Automatable yes (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
0.2%
EPSS %ILE
13th
KEV
Not listed

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 none (CISA Vulnrichment) · Automatable yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 25, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
Patch available.
Web page

PhotoSwipe - Responsive JavaScript Modal Image Gallery - Moderately critical - Access bypass - SA-CONTRIB-2026-088 | Drupal.org

https://www.drupal.org/sa-contrib-2026-088

Vendor Advisories for CVE-2026-16645(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist:https://packages.drupal.org/8(1)
PackageVulnerable rangeFix by version rangeDependents
drupal/photoswipe—
  • every version up to 3.2.0: fixed in 3.2.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 182× 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.

Showing the most recent 100 of 339 refreshes 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 239 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-10-14 09:55 UTCEG score recompute
  3. 2026-10-14 09:54 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-10-13 07:55 UTCEG score recompute
  6. 2026-10-13 07:55 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  7. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-12 16:30 UTCEG score recompute
  9. 2026-10-12 09:34 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  10. 2026-10-11 20:09 UTCEG score recompute
  11. 2026-10-11 17:21 UTCEG score recompute
  12. 2026-10-11 14:54 UTCEG score recompute
  13. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-10 14:12 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-10 10:03 UTCEG score recompute
  17. 2026-10-10 10:02 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  18. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-10-09 07:25 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-09 03:41 UTCEG score recompute
  21. 2026-10-09 03:41 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  22. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-08 09:47 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-08 06:02 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  25. 2026-10-08 02:16 UTCEG score recompute
Show 75 more
  1. 2026-10-08 02:16 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  2. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-07 10:55 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-07 07:10 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  5. 2026-10-07 03:15 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-06 23:30 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  7. 2026-10-06 19:45 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  8. 2026-10-06 16:01 UTCEG score recompute
  9. 2026-10-06 16:01 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  10. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-06 11:23 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  12. 2026-10-06 07:38 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  13. 2026-10-06 01:51 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  14. 2026-10-05 20:41 UTCEG score recompute
  15. 2026-10-05 20:41 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-05 16:57 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  18. 2026-10-05 11:21 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  19. 2026-10-05 07:32 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-05 03:46 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-04 23:29 UTCEG score recompute
  22. 2026-10-04 23:29 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  23. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-04 19:44 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  25. 2026-10-04 13:23 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  26. 2026-10-04 09:36 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  27. 2026-10-04 05:51 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  28. 2026-10-04 02:07 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  29. 2026-10-03 20:00 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  30. 2026-10-03 16:16 UTCEG score recompute
  31. 2026-10-03 16:16 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  32. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  33. 2026-10-03 05:18 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  34. 2026-10-03 01:33 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  35. 2026-10-02 21:36 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  36. 2026-10-02 17:51 UTCEG score recompute
  37. 2026-10-02 17:51 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  38. 2026-10-02 14:03 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  39. 2026-10-02 10:09 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  40. 2026-10-02 06:24 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  41. 2026-10-02 01:16 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  42. 2026-10-01 19:59 UTCEG score recompute
  43. 2026-10-01 19:59 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  44. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-10-01 13:02 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  46. 2026-10-01 09:18 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  47. 2026-10-01 05:34 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  48. 2026-10-01 01:06 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  49. 2026-09-30 20:09 UTCEG score recompute
  50. 2026-09-30 20:09 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  51. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  52. 2026-09-30 10:04 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  53. 2026-09-30 06:20 UTCEG score recompute
  54. 2026-09-30 06:20 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  55. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-09-29 12:39 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-09-29 05:15 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  58. 2026-09-29 01:31 UTCEG score recompute
  59. 2026-09-29 01:31 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-09-28 21:24 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  61. 2026-09-28 15:57 UTCEG score recompute
  62. 2026-09-28 15:57 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  63. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  64. 2026-09-28 12:12 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  65. 2026-09-28 08:27 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  66. 2026-09-28 04:38 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  67. 2026-09-28 00:53 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  68. 2026-09-27 21:09 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  69. 2026-09-27 17:25 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  70. 2026-09-27 13:35 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  71. 2026-09-27 09:43 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  72. 2026-09-27 05:59 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  73. 2026-09-27 02:14 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1
  74. 2026-09-26 21:32 UTCEG score recompute
  75. 2026-09-26 21:32 UTCGHSA enrichmentGHSA-wq7x-7x4j-792v · GitHub severity CRITICAL · GitHub CVSS 9.1

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16645?
CVE-2026-16645 is a critical-severity vulnerability; its CVE record was published on August 25, 2026. Missing Authorization vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image Gallery allows Forceful Browsing. This issue affects PhotoSwipe - Responsive JavaScript Modal Image Gallery versions: from 0.0.0 to 3.2.0.
When was CVE-2026-16645 made public?
CVE-2026-16645 was made public on July 22, 2026: that is the date its CVE record's CNA, Drupal.org, gives for when the vulnerability was made public. The CVE record itself was published on August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of August 28, 2026; the record at its source may have been updated since.
Is CVE-2026-16645 actively exploited?
CVE-2026-16645 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16645?
CVE-2026-16645 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16645?
A fix for CVE-2026-16645 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16645 are linked in the Vendor Advisories panel on this page.

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