Withdrawn: this CVE is not a vulnerability
The assigning CNA withdrew CVE-2022-50999 on 8 September 2026, and it carries the Rejected state at CVE.org and NVD. It must not be treated as a live finding. Its pre-withdrawal severity, score and exploitability are withheld below; the record itself is kept because withdrawals are reversible and because the reject reason is the correction worth publishing.
WITHDRAWN
CVE-2022-50999
Nokogiri before 1.13.5 Integer Overflow via libxml2
Overview
Description
Rejected reason: This CVE ID has been rejected as a duplicate.
Details
INFO
Published Date :
Aug. 25, 2026, 4:16 p.m.
Last Modified :
Sept. 8, 2026, 3:17 p.m.
Remotely Exploit :
—
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50999 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50999 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Rejected by [email protected]
Sep. 08, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Sep. 08, 2026
Action Type Old Value New Value Changed Description Nokogiri versions before 1.13.5 contain an integer overflow vulnerability in packaged libxml2 buffer handling functions that allows attackers to cause out-of-bounds memory writes. Attackers can exploit this by crafting multi-gigabyte XML files to trigger buffer overflows resulting in information disclosure, data modification, or denial of service. Rejected reason: This CVE ID has been rejected as a duplicate. Removed CVSS V4.0 VulnCheck: AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Removed CVSS V3.1 VulnCheck: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Removed CVSS V3.1 nvd-ai-agent-0.3.0-gemma-4-31B-it: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Removed CWE VulnCheck: CWE-119 Removed CWE nvd-ai-agent-0.3.0-gemma-4-31B-it: CWE-190 Removed CPE Configuration OR *cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* versions up to (excluding) 1.13.5 Removed CPE Configuration OR *cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:* versions up to (excluding) 1.13.5 Added Affected Affected value removed. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2022/50xxx/CVE-2022-50999.json">CVE-2022-50999</a> Removed Reference VulnCheck: https://github.com/GNOME/libxml2/commit/2554a24 Removed Reference VulnCheck: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Removed Reference VulnCheck: https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Removed Reference nvd-ai-agent-0.3.0-gemma-4-31B-it: https://github.com/sparklemotion/nokogiri/commit/2554a24 Removed Reference nvd-ai-agent-0.3.0-gemma-4-31B-it: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Removed Reference nvd-ai-agent-0.3.0-gemma-4-31B-it: https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Removed Reference Type VulnCheck: https://github.com/GNOME/libxml2/commit/2554a24 Types: Patch Removed Reference Type VulnCheck: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Types: Mitigation, Vendor Advisory Removed Reference Type VulnCheck: https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Types: Third Party Advisory Removed Reference Type nvd-ai-agent-0.3.0-gemma-4-31B-it: https://github.com/sparklemotion/nokogiri/commit/2554a24 Types: Broken Link Removed Reference Type nvd-ai-agent-0.3.0-gemma-4-31B-it: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Types: Mitigation, Patch, Vendor Advisory Removed Reference Type nvd-ai-agent-0.3.0-gemma-4-31B-it: https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Types: Broken Link -
Initial Analysis by [email protected]
Sep. 01, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:* versions up to (excluding) 1.13.5 Added Reference Type VulnCheck: https://github.com/GNOME/libxml2/commit/2554a24 Types: Patch Added Reference Type VulnCheck: https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Types: Mitigation, Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Types: Third Party Advisory -
CVE Modified by [email protected]
Aug. 28, 2026
Action Type Old Value New Value Added Reference https://github.com/GNOME/libxml2/commit/2554a24 Added Reference https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Added Reference https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 Removed Reference https://github.com/sparklemotion/nokogiri/commit/2554a24 Removed Reference https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Removed Reference https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 25, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2022-50999', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-25T16:16:27.162140Z'} -
New CVE Received by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'sparklemotion', 'product': 'nokogiri', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.13.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '1.13.5', 'versionType': 'semver'}], 'packageURL': 'pkg:gem/nokogiri', 'defaultStatus': 'unaffected'}] Added Description Nokogiri versions before 1.13.5 contain an integer overflow vulnerability in packaged libxml2 buffer handling functions that allows attackers to cause out-of-bounds memory writes. Attackers can exploit this by crafting multi-gigabyte XML files to trigger buffer overflows resulting in information disclosure, data modification, or denial of service. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Added CWE CWE-119 Added Reference https://github.com/sparklemotion/nokogiri/commit/2554a24 Added Reference https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5 Added Reference https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.