Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers so fetchOptions.headers resolves through inheritance. The inherited fetchOptions.headers value overrides the sanitized Request headers through the second argument to fetch after Request construction. Attacker-controlled request headers can alter authorization, caching, metadata-service access, or application-specific behavior. This issue is fixed in version 1.20.0.
CVE-2026-101908
MEDIUMPre-NVD 6.96.9—Trending — Patch released this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd 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
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.9Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 6.9
- EG Score
- 6.9MEDIUMmedium confidence
- EG Risk
- 36EG Risk 36/100CISA 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 computedSeverity69% × 45%Exploitation0% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).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
- 0.4%
- EPSS %ILE
- 33rd
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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
September 28, 2026
Last Modified
September 30, 2026
Advisory Details (4)
Auto-updated Sep 28, 2026🔬 Proof of concept available. Patch available. Sources: github_pr, github_commit, github_release, github.
github_release Patch Available
v1.20.0
Patch available: axios/axios v1.20.0
https://github.com/axios/axios/releases/tag/v1.20.0github_commit Patch Available
commit d19040bda7a8 (axios/axios)
Patch available: axios/axios v1.20.0 (contains commit d19040bda7a8)
https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39agithub_pr Patch Available
fix: harden runtime option handling
Patch available: axios/axios v1.20.0 (PR #11141 merged 2026-08-12)
https://github.com/axios/axios/pull/11141github Patch Available🟡 PoC Available
Prototype pollution gadget in fetch adapter can alter outbound requests · Advisory · axios/axios · GitHub
https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8Vendor Advisories for CVE-2026-101908(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | grafana13-1-main-13.1.6-0.6.hum1 | 2026-10-02 | redhat |
| redhat | grafana12-4-main-12.4.12-0.3.hum1 | 2026-10-02 | redhat |
| redhat | grafana13-2-main-13.2.1-0.9.hum1 | 2026-10-02 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| axios | — | 1.20.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(3)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 12× in last 7d / 12× 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.
- 2026-10-03 14:40 UTCEG score recompute
- 2026-10-03 14:40 UTCVendor advisory
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-02 16:21 UTCEG score recompute
- 2026-10-01 19:49 UTCEPSS rescore
- 2026-09-30 16:34 UTCEG score recompute
- 2026-09-30 15:02 UTCEPSS rescore
- 2026-09-29 18:05 UTCEG score recompute
- 2026-09-29 15:20 UTCEPSS rescore
- 2026-09-28 18:20 UTCEG score recompute
- 2026-09-28 17:47 UTCEG score recompute
- 2026-09-28 17:46 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownnpm:axios
Same vendor
10 shownredhat:RHSA-2026:74869
Frequently asked(5)
What is CVE-2026-101908?
CVE-2026-101908 is a medium vulnerability published on September 28, 2026. Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers…
When was CVE-2026-101908 disclosed?
CVE-2026-101908 was first published on September 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-101908 actively exploited?
CVE-2026-101908 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101908?
CVE-2026-101908 has a CVSS base score of 6.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-101908?
A fix for CVE-2026-101908 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-101908 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-101908
Is Your Infrastructure Affected by CVE-2026-101908?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.