CVE-2026-43935

HIGHNVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-31850 (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: 0.3%CVSS: 8.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

e107 is a content management system (CMS). Prior to 2.3.4, a Host Header Injection vulnerability in the password reset page allows attackers to manipulate the Host header to generate password reset links pointing to attacker-controlled domains. This can lead to phishing attacks, account takeover, or other security risks. The severity is high, as the vulnerability affects a critical function related to user authentication. This vulnerability is fixed in 2.3.4.

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
0.3%
EPSS %ILE
22nd
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.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS. 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: 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.

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

May 26, 2026

Last Modified

July 24, 2026

Advisory Details (4)

Auto-updated Jun 3, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Host Header Injection in e107 password reset enables phishing · Advisory · e107inc/e107 · GitHub

https://github.com/e107inc/e107/security/advisories/GHSA-7pmw-jwvr-cq2x
GitHub commit Patch Available

commit c4f9f71b0fd6 (e107inc/e107)

Patch available: e107inc/e107 v2.3.4 (contains commit c4f9f71b0fd6)

https://github.com/e107inc/e107/commit/c4f9f71b0fd695545d0f09e2277b6f70ff4660fc
GitHub commit Patch Available

commit b0dee8234e27 (e107inc/e107)

Patch available: e107inc/e107 v2.3.4 (contains commit b0dee8234e27)

https://github.com/e107inc/e107/commit/b0dee8234e273debbf7a8ae054de464f1008f357
GitHub commit Patch Available

commit 04511f9f1d6e (e107inc/e107)

Patch available: e107inc/e107 v2.3.4 (contains commit 04511f9f1d6e)

https://github.com/e107inc/e107/commit/04511f9f1d6e97c31ba7cc5bf7f1f9a19d221db6

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 37× 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 192 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 92 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
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  7. 2026-10-25 14:28 UTCEG score recompute
  8. 2026-10-24 20:31 UTCEG score recompute
  9. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
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  16. 2026-10-18 03:39 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
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  23. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-12 16:05 UTCEG score recompute
  25. 2026-10-11 19:47 UTCEG score recompute
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  1. 2026-10-11 17:02 UTCEG score recompute
  2. 2026-10-11 14:27 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 44th percentile
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  13. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-09-30 01:39 UTCOSV refresh
  15. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  17. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
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  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  27. 2026-09-11 01:53 UTCOSV refresh
  28. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
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  40. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
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  50. 2026-08-16 16:32 UTCEG score recompute
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  75. 2026-08-03 16:40 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-43935?
CVE-2026-43935 is a high-severity vulnerability; its CVE record was published on May 26, 2026. e107 is a content management system (CMS). Prior to 2.3.4, a Host Header Injection vulnerability in the password reset page allows attackers to manipulate the Host header to generate password reset links pointing to attacker-controlled domains. This can lead to phishing attacks, account takeover,…
When was the CVE record for CVE-2026-43935 published?
The CVE record for CVE-2026-43935 was published on May 26, 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 July 24, 2026; the record at its source may have been updated since.
Is CVE-2026-43935 actively exploited?
CVE-2026-43935 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43935?
CVE-2026-43935 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-43935?
A fix for CVE-2026-43935 is available: update to the fixed version the vendor names in its advisory.

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