CVE-2026-42197

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

RELATE is a web-based courseware package. Versions prior to commit 555f0efb1c5bd7531c07cd73724d7e566a81f620 have a stored cross-site scripting vulnerability that allows any enrolled student to execute arbitrary JavaScript in an administrator's browser session, potentially leading to full admin account takeover. The get_user() method in ParticipationAdmin renders user-controlled input using mark_safe combined with Python's % string formatting. This bypasses Django\'s automatic HTML escaping entirely. The value returned by get_full_name is derived directly from the first_name and last_name fields of the User model. These fields are freely editable by any authenticated user through the profile page (/profile/) with no sanitization applied. When an admin views the Participation list in the Django admin panel, the unsanitized value is rendered directly into the HTML response, causing the injected script to execute in the admin's browser. Commit 555f0efb1c5bd7531c07cd73724d7e566a81f620 fixes the issue.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 1, 2026

Advisory Details (3)

Auto-updated Jun 3, 2026
Patch available. Sources: github, github_commit.
github Patch Available

Stored XSS via Unprivileged User Profile · Advisory · inducer/relate · GitHub

https://github.com/inducer/relate/security/advisories/GHSA-37xm-vhx8-g6w3
github_commit

commit 555f0efb1c5b (inducer/relate)

Fix landed in inducer/relate commit 555f0efb1c5b — awaiting tagged release

https://github.com/inducer/relate/commit/555f0efb1c5bd7531c07cd73724d7e566a81f620
generic

relate/course/admin.py at 550b8c54eb4d5f3e5f6698dcba361bf34d715599 · inducer/relate · GitHub

https://github.com/inducer/relate/blob/550b8c54eb4d5f3e5f6698dcba361bf34d715599/course/admin.py#L347-L368

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 144 total refreshes for this CVE.

  1. 2026-09-16 05:15 UTCEPSS rescore
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  1. 2026-08-20 11:13 UTCEG score recompute
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Frequently asked(5)

What is CVE-2026-42197?
CVE-2026-42197 is a high vulnerability published on May 27, 2026. RELATE is a web-based courseware package. Versions prior to commit 555f0efb1c5bd7531c07cd73724d7e566a81f620 have a stored cross-site scripting vulnerability that allows any enrolled student to execute arbitrary JavaScript in an administrator's browser session, potentially leading to full admin…
When was CVE-2026-42197 disclosed?
CVE-2026-42197 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42197 actively exploited?
CVE-2026-42197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.3% of all scored CVEs.
What is the CVSS score of CVE-2026-42197?
CVE-2026-42197 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-42197?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42197, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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