High
codeblocks — security advisory
Code Blocks 20.03 contains a denial of service vulnerability that allows attackers to crash the application by manipulating input in the FSymbols search field. Attackers can paste a large payload of 5000 repeated characters into the search field to trigger an application crash.
- Products
- codeblocks
- Affected versions
- 13.12+dfsg-4, 13.12-3.1build1, 16.01+dfsg-2.1, 17.12+dfsg-1, 17.12+dfsg-1build1, 20.03+svn13046-0.1build1, 20.03+svn13046-0.2, 20.03+svn13046-0.3build1, 20.03+svn13046-0.3build2, 20.03+svn13046-0.4, 20.03-3, 20.03-3.1, 25.03+dfsg-2, 25.03+dfsg-2.1, 25.03+dfsg-3
- Fixed versions
- Not specified
- CVEs
- CVE-2020-37038
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:52 UTC · Revision 1
Source evidence
Code Blocks 20.03 contains a denial of service vulnerability that allows attackers to crash the application by manipulating input in the FSymbols search field. Attackers can paste a large payload of 5000 repeated characters into the search field to trigger an application crash.
osv:UBUNTU-CVE-2020-37038
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
Complete source record
{
"id": "09b3671cd76ab6f15c34f882c74352ea12672b3ac83826d1adcc894397b87416",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-37038",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-37038",
"summary": "Code Blocks 20.03 contains a denial of service vulnerability that allows attackers to crash the application by manipulating input in the FSymbols search field. Attackers can paste a large payload of 5000 repeated characters into the search field to trigger an application crash.",
"evidence": "osv:UBUNTU-CVE-2020-37038",
"products": [
{
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{
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"severity": "high",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
},
{
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},
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],
"modified": "2026-10-17T12:56:14.129864535Z",
"provider": "osv",
"upstream": [
"CVE-2020-37038"
],
"references": [
"https://ubuntu.com/security/CVE-2020-37038",
"https://www.cve.org/CVERecord?id=CVE-2020-37038",
"https://www.exploit-db.com/exploits/48617",
"https://sourceforge.net/projects/codeblocks",
"https://www.vulncheck.com/advisories/code-blocks-denial-of-service"
]
},
"related_cves": [
{
"value": "CVE-2020-37038",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354995,
"published_at": "2026-01-30T23:16:00+00:00"
}