CVE-2026-125389

MEDIUMPre-NVD 6.16.1
EchelonGraph scoreHIGH confidence

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

Score 6.1 from GitHub Security Advisory (severity: MODERATE) published 2026-11-10. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-120552 (ENISA EUVD) · GHSA-qp22-4vrj-5v6w (GitHub Security Advisories)Source: ENISA EUVD

6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a stored cross-site scripting vulnerability in the email viewer due to a flawed regex in StringHelper::filterXSS. Remote attackers can send emails containing tags like svg/onload, which MessagePanel.js renders raw, executing script in the recipient's session when opened.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
28
EG Risk 28/100

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.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact partial (CVSS v4.0 confidentiality and integrity impact neither High). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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.
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 (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
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact partial (CVSS v4.0 confidentiality and integrity impact neither High). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact partial (CVSS v4.0 confidentiality and integrity impact neither High). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

November 9, 2026

Last Modified

November 12, 2026

Advisory Details (6)

Auto-updated Nov 10, 2026
Patch available. Sources: github, github_commit.
Web page

Group-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/group-office-before-6.8.181-25.0.116-and-26.0.58-stored-xss-via-filterxss-bypass
GitHub advisoryMentions a patch (unverified)

Stored XSS in Group-Office Email Viewer - `filterXSS` Regex Bypass (`<svg/onload>`) Rendered Raw into the Application Origin · Advisory · Intermesh/groupoffice · GitHub

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-52gw-p4j3-v53c
GitHub commit Patch Available

commit f32e9674b162 (Intermesh/groupoffice)

Patch available: Intermesh/groupoffice v6.8.181 (contains commit f32e9674b162)

https://github.com/Intermesh/groupoffice/commit/f32e9674b162342f0e4a43932f4adaf03e97c755
GitHub commit Patch Available

commit bfc1fba43de5 (Intermesh/groupoffice)

Patch available: Intermesh/groupoffice v25.0.116 (contains commit bfc1fba43de5)

https://github.com/Intermesh/groupoffice/commit/bfc1fba43de53a6f662b1a12e31447a9c65d4d00
GitHub commit Patch Available

commit 8e9ff58807c5 (Intermesh/groupoffice)

Patch available: Intermesh/groupoffice v26.0.58 (contains commit 8e9ff58807c5)

https://github.com/Intermesh/groupoffice/commit/8e9ff58807c5cfa71a34a48d80410479c1e7f9f5
Web page

groupoffice/www/go/base/util/StringHelper.php at v26.0.57 · Intermesh/groupoffice · GitHub

https://github.com/Intermesh/groupoffice/blob/v26.0.57/www/go/base/util/StringHelper.php#L799

Vendor Advisories for CVE-2026-125389(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 8× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-12 21:29 UTCEchelonGraph re-scored
  2. 2026-11-12 21:29 UTCGHSA enrichmentGHSA-qp22-4vrj-5v6w · GitHub severity MODERATE · GitHub CVSS 6.1
  3. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  5. 2026-11-11 07:34 UTCEchelonGraph re-scored
  6. 2026-11-11 07:34 UTCGHSA enrichmentGHSA-qp22-4vrj-5v6w · GitHub severity MODERATE · GitHub CVSS 6.1
  7. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  8. 2026-11-10 00:46 UTCEchelonGraph re-scored
  9. 2026-11-10 00:46 UTCGHSA enrichmentGHSA-qp22-4vrj-5v6w · GitHub severity MODERATE · GitHub CVSS 6.1
  10. 2026-11-10 00:27 UTCEchelonGraph re-scored
  11. 2026-11-10 00:00 UTCENISA EUVD ID recordedEUVD-2026-120552 · Source: ENISA EUVD
  12. 2026-11-09 23:35 UTCEchelonGraph re-scoredFirst assessed: 6.1 MEDIUM
  13. 2026-11-09 23:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-125389?
CVE-2026-125389 is a medium-severity vulnerability; its CVE record was published on November 9, 2026. Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a stored cross-site scripting vulnerability in the email viewer due to a flawed regex in StringHelper::filterXSS. Remote attackers can send emails containing tags like svg/onload, which MessagePanel.js renders raw, executing…
When was CVE-2026-125389 made public?
CVE-2026-125389 was made public on November 9, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on November 9, 2026. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-125389 actively exploited?
CVE-2026-125389 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-2026-125389?
CVE-2026-125389 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-125389?
A fix for CVE-2026-125389 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-125389 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-125389

Explore →

Is Your Infrastructure Affected by CVE-2026-125389?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.