CVE-2026-48590

LOWPre-NVD 2.12.1—
EchelonGraph scoreMEDIUM confidence

This low-severity CVE scores 2.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (11th percentile of EPSS-scored CVEs). 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, secondary
Elevated
2.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 2.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.

This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.

Element names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<, >, ", ', &). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.

This issue affects xml_builder: from 0.0.1 before 2.4.1.

CVSS v3
2.1
EG Score
2.1LOWmedium confidence
EG Risk
25
EG Risk 25/100CISA SSVC

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
Severity21% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 21, 2026

Last Modified

August 24, 2026

References (5)

Affected Packages

(1 across 1 ecosystem)
Hex(1)
PackageVulnerable rangeFix by version rangeDependents
xml_builder0.0.1 ... 2.4.0 (20 versions)
  • 0.0.1 up to 2.4.1: fixed in 2.4.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-06 16:50 UTCEG score recompute
  6. 2026-10-06 15:18 UTCEPSS rescore
  7. 2026-10-05 17:43 UTCEPSS rescore
  8. 2026-10-04 23:22 UTCEPSS rescore
  9. 2026-10-03 16:43 UTCEG score recompute
  10. 2026-10-03 14:25 UTCEPSS rescore
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-30 07:58 UTCEG score recompute
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-27 02:33 UTCEG score recompute
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-26 00:27 UTCEPSS rescore
  19. 2026-09-24 00:12 UTCEG score recompute
  20. 2026-09-23 17:53 UTCEPSS rescore
  21. 2026-09-21 00:31 UTCEG score recompute
  22. 2026-09-20 20:16 UTCEPSS rescore
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 00:50 UTCEG score recompute
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 32 more
  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-15 01:09 UTCEG score recompute
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-12 01:29 UTCEG score recompute
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-10 09:35 UTCEPSS rescore
  7. 2026-09-09 01:48 UTCEG score recompute
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-07 16:01 UTCEPSS rescore
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-05 15:44 UTCEG score recompute
  12. 2026-09-04 05:06 UTCEPSS rescore
  13. 2026-09-02 16:02 UTCEG score recompute
  14. 2026-09-01 13:54 UTCEPSS rescore
  15. 2026-09-01 04:40 UTCEPSS rescore
  16. 2026-08-30 19:17 UTCEPSS rescore
  17. 2026-08-30 16:19 UTCEG score recompute
  18. 2026-08-30 01:22 UTCEPSS rescore
  19. 2026-08-28 21:41 UTCEPSS rescore
  20. 2026-08-27 16:38 UTCEG score recompute
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-26 14:46 UTCEPSS rescore
  23. 2026-08-25 13:49 UTCEPSS rescore
  24. 2026-08-24 16:57 UTCEG score recompute
  25. 2026-08-24 13:00 UTCEG score recompute
  26. 2026-08-23 00:19 UTCEPSS rescore
  27. 2026-08-21 23:49 UTCEPSS rescore
  28. 2026-08-21 13:20 UTCEG score recompute
  29. 2026-08-21 12:30 UTCEG score recompute
  30. 2026-08-21 10:18 UTCEG score recompute
  31. 2026-08-21 09:59 UTCEG score recompute
  32. 2026-08-21 09:59 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Same product

2 shown

Hex:xml_builder

Frequently asked(5)

What is CVE-2026-48590?
CVE-2026-48590 is a low vulnerability published on August 21, 2026. XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection. This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2,…
When was CVE-2026-48590 disclosed?
CVE-2026-48590 was first published on August 21, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48590 actively exploited?
CVE-2026-48590 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48590?
CVE-2026-48590 has a CVSS base score of 2.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-48590?
A fix for CVE-2026-48590 is available: update to the fixed version the vendor names in its advisory.

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