CVE Explorer

CVE-2026-22781

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. TinyWeb HTTP Server before version 1.98 is vulnerable to OS command injection via CGI ISINDEX-style query parameters. The query parameters are passed as command-line arguments to the CGI executable via Windows CreateProcess(). An unauthenticated remote attacker can execute arbitrary commands on the server by injecting Windows shell metacharacters into HTTP requests. This vulnerability is fixed in 1.98.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b5e36299e895e44ad7c85bac13a1c4c81e9c593cfc908f64f07bec5b2f1c9beb

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"TinyWeb","vendor":"maximmasiutin","versions":[{"status":"affected","version":"< 1.98"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/maximmasiutin/TinyWeb/commit/876b7e2887f4ea5be3e18bb2af7313f23a283c96","tags":["x_refsource_MISC"],"url":"https://github.com/maximmasiutin/TinyWeb/commit/876b7e2887f4ea5be3e18bb2af7313f23a283c96"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/references/1

{"name":"https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-m779-84h5-72q2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-m779-84h5-72q2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/references/0

{"name":"https://www.masiutin.net/tinyweb-cve-2025-cgi-command-injection.html","tags":["x_refsource_MISC"],"url":"https://www.masiutin.net/tinyweb-cve-2025-cgi-command-injection.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b4495d6774a641f5ffce583e3df0c9a941fb35e3a9eb3f2aa9a4dfbaf36bfac9 · sha256:3f1e5548ab941e7b… · /containers/cna/references/2

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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