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CVE-2025-6998

ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. This issue affects Calibre Web: 0.6.24 (Nicolette); Autocaliweb: from 0.7.0 before 0.7.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dc86286581c7258ae2775ec5ad83d2b6f22916cd8512c1a1bf130979252e3f7f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Autocaliweb","vendor":"Autocaliweb","versions":[{"lessThan":"0.7.1","status":"affected","version":"0.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/affected/1

{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Calibre Web","vendor":"Calibre Web","versions":[{"status":"affected","version":"0.6.24","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Autocaliweb","vendor":"Autocaliweb","versions":[{"lessThan":"0.7.1","status":"affected","version":"0.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/affected/1
{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Calibre Web","vendor":"Calibre Web","versions":[{"status":"affected","version":"0.6.24","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NON…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"CWE-1333 Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["third-party-advisory"],"url":"https://fluidattacks.com/advisories/megadeth"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/references/0
{"tags":["product"],"url":"https://github.com/gelbphoenix/autocaliweb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/references/2
{"tags":["product"],"url":"https://github.com/janeczku/calibre-web"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c2b24f473098540991728cdc53f664ba2c5d1b7c2d949d0c047617b922a5b906 · sha256:e12ae61b000565f1… · /containers/cna/references/1

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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