CVE-2026-32686
📛 CVE Title
Unbounded exponent in decimal enables unauthenticated DoS
Description
Uncontrolled Resource Consumption vulnerability in ericmj decimal allows unauthenticated remote Denial of Service. The decimal library does not bound the exponent on parsed input. Storing a decimal with a very large exponent (e.g. Decimal.new("1e1000000000")) is accepted without error. Subsequent calls to arithmetic functions (Decimal.add/2, Decimal.sub/2, Decimal.div/2), Decimal.to_string/2 with :normal or :xsd format, Decimal.to_integer/1, Decimal.round/3, or Decimal.compare/3 with a threshold allocate memory proportional to the exponent value, which can exhaust available memory and crash the BEAM VM. Any application that accepts user-supplied decimal input and subsequently performs arithmetic, rounding, conversion to integer, or string formatting on it is exposed. A single malicious request is sufficient to cause an out-of-memory crash. This issue affects decimal: from 0.1.0 before 3.0.0.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- EEF
- CVSS severity
- MEDIUM
- CVSS score
- 6.9 / 10
- CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N- Effective score
- 6.9 / 10 MEDIUM source: CNA overview
- CWE(s)
-
CWE-400 - Reserved
- 2026-03-13
- Published
- 2026-05-07 16:04 UTC
- Last updated
- 2026-05-09 06:18 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32686.json
- Linked Threat
- CVE-2026-32686 — CVE-2026-32686
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-07 15:16:05 UTC
- NVD last modified
- 2026-05-08 23:16:35 UTC
- EPSS score
- 0.0003 (probability of exploitation in next 30 days)
- EPSS percentile
- 8.67% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25
NVD / KEV / EPSS data refreshed 2026-05-25 14:23 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-28376 - Assigner
- EEF
- Published
- May 7, 2026, 2:04:47 PM
- Updated
- May 27, 2026, 3:40:44 PM
- EUVD base score (CVSS 4.0)
-
6.9 / 10
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.0300
- Vendors
- ericmj
- Products
-
decimal (bc11f4a2b6fb61fc1360a0ab4e79141bba918841 <6a523f3a73b8c9974540e21c7aa88f1258bb35ae)decimal (0.1.0 <3.0.0)
ENISA description: Uncontrolled Resource Consumption vulnerability in ericmj decimal allows unauthenticated remote Denial of Service. The decimal library does not bound the exponent on parsed input. Storing a decimal with a very large exponent (e.g. Decimal.new("1e1000000000")) is accepted without error. Subsequent calls to arithmetic functions (Decimal.add/2, Decimal.sub/2, Decimal.div/2), Decimal.to_string/2 with :normal or :xsd format, Decimal.to_integer/1, Decimal.round/3, or Decimal.compare/3 with a threshold allocate memory proportional to the exponent value, which can exhaust available memory and crash the BEAM VM. Any application that accepts user-supplied decimal input and subsequently performs arithmetic, rounding, conversion to integer, or string formatting on it is exposed. A single malicious request is sufficient to cause an out-of-memory crash. This issue affects decimal: from 0.1.0 before 3.0.0.
Affected products (2)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| ericmj | decimal |
0.1.0 (affected)
|
— |
| ericmj | decimal |
bc11f4a2b6fb61fc1360a0ab4e79141bba918841 (affected)
|
— |
Vendor references (4)
References embedded in the original CVE record by the assigning CNA.
MITRE references (4) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (3)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2026-32686 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-32686 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (5)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://cna.erlef.org/cves/CVE-2026-32686.html 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/ericmj/decimal/commit/6a523f3a73b8c9974540e21c7aa88f1258bb35ae 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/ericmj/decimal/security/advisories/GHSA-rhv4-8758-jx7v 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/ericmj/decimal/security/advisories/GHSA-rhv4-8758-jx7v 134c704f-9b21-4f2e-91b3-4a467353bcc0
- https://osv.dev/vulnerability/EEF-CVE-2026-32686 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Remediations (19)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:blog.qualys.com
Microsoft has rolled out its March 2026 Patch Tuesday updates, delivering a fresh batch of security fixes designed to keep Windows environments protected from emerging threats.
2026-05-23 21:08 UTC -
web:cybersecuritynews.com
Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...
2026-05-23 21:08 UTC -
web:helpx.adobe.com
Security updates for Adobe Acrobat and Reader
2026-05-23 21:08 UTC -
web:krebsonsecurity.com
Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.
2026-05-23 21:08 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-23 21:08 UTC -
web:www.bleepingcomputer.com
Today is Microsoft's March 2026 Patch Tuesday with security updates for 79 flaws, including 2 publicly disclosed zero-day vulnerabilities.
2026-05-23 21:08 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-05-23 21:08 UTC -
web:www.windowslatest.com
Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.
2026-05-23 21:08 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-23 21:08 UTC -
web:blogs.oracle.com
For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.
2026-05-26 02:49 UTC -
web:blog.talosintelligence.com
Microsoft has released its monthly security update for April 2026 , which includes 165 vulnerabilities affecting a wide range of products, including eight Microsoft marked as "critical." CVE - 2026 -23666 is a critical Denial of Service (DoS) vulnerability that affects the .NET framework. Successful exploitation could allow the attacker to deny service over the network. CVE - 2026 -32157 is a ...
2026-05-26 02:49 UTC -
web:cyberscoop.com
Threats Microsoft addresses 137 vulnerabilities in May's Patch Tuesday, including 13 rated critical The high volume of vulnerabilities reflects a growing trend researchers have been anticipating as artificial intelligence models are deployed to find previously uncovered defects in code.
2026-05-26 02:49 UTC -
web:learn.microsoft.com
January 2026 Security Updates This release consists of the following 112 Microsoft CVEs : Tag CVE Base Score CVSS Vector Exploitability FAQs? Workarounds? Mitigations ? Windows Deployment Services CVE - 2026 -0386 SQL Server CVE - 2026 -20803 Windows Hello…
2026-05-26 02:49 UTC -
web:vulert.com
Microsoft's May 2026 Patch Tuesday fixes 138 vulnerabilities, including critical Windows DNS and Netlogon RCE flaws. Learn the risks, key CVEs , mitigation steps, and how Vulert can help.
2026-05-26 02:49 UTC -
web:www.bleepingcomputer.com
Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.
2026-05-26 02:49 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-05-26 02:49 UTC -
web:www.crowdstrike.com
Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.
2026-05-26 02:49 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-26 02:49 UTC -
web:www.securityweek.com
Oracle on Tuesday announced the release of 481 new security patches as part of its April 2026 Critical Patch Update (CPU). Across the 28 product families that received security updates, more than 300 patches address vulnerabilities that are remotely exploitable without authentication.
2026-05-26 02:49 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-32686.json.
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