CVE-2026-102778

MEDIUMNVD 6.16.1
EchelonGraph scoreHIGH confidence

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

Score 6.1 from GitHub Security Advisory published 2026-10-05. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2026-92453 (ENISA EUVD) · GHSA-r52h-f94x-72vr (GitHub Security Advisories)Source: ENISA EUVD

6.1EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 6.1Exploit: None knownExposed 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 (Joomla! Project), states the affected versions: "Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link th…" No release containing a fix is confirmed on record.

Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link the article the image was shared from when the option "Share article links" is on. It took the address of the article from the shared link and printed it into the page without checking or escaping it; with the link type "Image Page with Redirect" it followed the address at once. A prepared link could therefore run a script in the page, in the session of the visitor who opened it, or send the visitor to another web site. Nothing on the server is changed or read by the server.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
42
EG Risk 42/100

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)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation<0.1% × 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 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. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
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 (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
<0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). 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 or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.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 or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

October 5, 2026

Last Modified

October 14, 2026

Advisory Details (1)

Auto-updated Oct 5, 2026
No fix on record yet.
Web page

Event Gallery - A gallery component for Joomla!

https://www.svenbluege.de/

Vendor Advisories for CVE-2026-102778(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 6× in last 7d / 50× 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. 2026-10-31 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-30 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-29 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-29 14:49 UTCEG score recompute
  5. 2026-10-29 14:49 UTCGHSA enrichmentGHSA-r52h-f94x-72vr · GitHub CVSS 6.1
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-25 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-10-25 14:56 UTCEG score recompute
  9. 2026-10-23 09:28 UTCEG score recompute
  10. 2026-10-23 09:28 UTCGHSA enrichmentGHSA-r52h-f94x-72vr · GitHub CVSS 6.1
  11. 2026-10-22 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-10-20 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-10-19 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-10-18 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-10-18 05:10 UTCEG score recompute
  16. 2026-10-16 16:40 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-10-15 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-10-14 19:08 UTCEG score recompute▲ 0.80
  19. 2026-10-14 19:07 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  20. 2026-10-14 19:04 UTCNVD updateCVSS v3 → 6.1
  21. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  22. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  23. 2026-10-12 16:40 UTCEG score recompute
  24. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  25. 2026-10-11 20:16 UTCEG score recompute
Show 25 more
  1. 2026-10-11 18:28 UTCEG score recompute
  2. 2026-10-11 14:04 UTCEG score recompute
  3. 2026-10-11 14:04 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  4. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  6. 2026-10-10 14:35 UTCEG score recompute
  7. 2026-10-10 14:34 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  8. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  9. 2026-10-09 15:06 UTCEG score recompute
  10. 2026-10-09 15:06 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  12. 2026-10-08 15:27 UTCEG score recompute
  13. 2026-10-08 15:27 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  14. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  15. 2026-10-07 14:53 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  16. 2026-10-06 15:24 UTCEG score recompute
  17. 2026-10-06 15:24 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  18. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  19. 2026-10-06 07:24 UTCEG score recompute
  20. 2026-10-06 07:24 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  21. 2026-10-06 07:12 UTCGHSA enrichmentGHSA-r52h-f94x-72vr
  22. 2026-10-05 18:26 UTCEG score recompute
  23. 2026-10-05 16:27 UTCEG score recompute
  24. 2026-10-05 16:11 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
  25. 2026-10-05 16:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-102778?
CVE-2026-102778 is a medium-severity vulnerability; its CVE record was published on October 5, 2026. Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link the article the image was shared from when the option "Share article links" is on.…
When was the CVE record for CVE-2026-102778 published?
The CVE record for CVE-2026-102778 was published on October 5, 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 October 14, 2026; the record at its source may have been updated since.
Is CVE-2026-102778 actively exploited?
CVE-2026-102778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102778?
CVE-2026-102778 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-102778?
No fix for CVE-2026-102778 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 (Joomla! Project), states the affected versions: "Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link th…" No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-102778 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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