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CVE-2026-42573

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a0f44d24b74912b0ed2bed2c63c12ecf80ef5f2391c3e7a07b412cded287b6bd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"unaffected","packageName":"rh-podman-desktop.git","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/affected/0

{"product":"svelte","vendor":"sveltejs","versions":[{"status":"affected","version":"< 5.55.7"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"],"defaultStatus":"unaffected","packageName":"rh-podman-desktop.git","product":"Red Hat Build of Podman Desktop","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/affected/0
{"product":"svelte","vendor":"sveltejs","versions":[{"status":"affected","version":"< 5.55.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42573"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/references/0
{"name":"RHBZ#2487093","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487093"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/references/1
{"name":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/references/1
{"name":"https://github.com/sveltejs/svelte/security/advisories/GHSA-rcqx-6q8c-2c42","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sveltejs/svelte/security/advisories/GHSA-rcqx-6q8c-2c42"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42573.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e9b2778b292ceff8ddb9ae2ef794ec6b42aa35cc98d2ce3bffb6466314dc2017 · sha256:9a7f4543d30acbfc… · /containers/adp/1/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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