In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4949-1 jetty9 security update
Github GHSA Github GHSA GHSA-m394-8rww-3jr7 DOS vulnerability for Quoted Quality CSV headers
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
https://bugs.eclipse.org/bugs/show_bug.cgi?id=571128 cve-icon cve-icon
https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7 cve-icon cve-icon cve-icon
https://github.com/jetty/jetty.project/commit/10e531756b972162eed402c44d0244f7f6b85131 cve-icon cve-icon
https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78%40%3Cissues.solr.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r07aedcb1ece62969c406cb84c8f0e22cec7e42cdc272f3176e473320%40%3Cusers.solr.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r0b639bd9bfaea265022125d18acd2fc6456044b76609ec74772c9567%40%3Cissues.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r0c6eced465950743f3041b03767a32b2e98d19731bd72277fc7ea428%40%3Ccommits.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r0cdab13815fc419805a332278c8d27e354e78560944fc36db0bdc760%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r0e25cdf3722a24c53049d37396f0da8502cb4b7cdc481650dc601dbc%40%3Cgitbox.activemq.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r105f4e52feb051faeb9141ef78f909aaf5129d6ed1fc52e099c79463%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r1414ab2b3f4bb4c0e736caff6dc8d15f93f6264f0cca5c47710d7bb3%40%3Creviews.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020ca72a4b%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r1b803e6ebdac5f670708878fb1b27cd7a0ce9d774a60e797e58cee6f%40%3Cissues.nifi.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r26d9196f4d2afb9bec2784bcb6fc183aca82e4119bf41bdc613eec01%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r27ad7843d060762cc942820566eeaa9639f75371afedf8124b943283%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc9987f65409%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r2c947376491a20d1cf143bf3c21ed74113e099d806cfe4c490a45ad8%40%3Creviews.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74d022b6c%40%3Cdev.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r3ce0e31b25ad4ee8f7c42b62cfdc72d1b586f5d6accd23f5295b6dd1%40%3Cdev.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r409ee2bae66bfff6aa89e6c74aff535e6248260d3afcb42bfb3b316b%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r463b12b27264c5e1e3c48c8c2cc5d33813d2f0d981102548fb3102fb%40%3Cissues.nifi.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r492cff8488a7f6eb96700afb5d137b719ddb80a833e77f971d2691c6%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r4a456d89a83752a012d88a60ff4b21def6c9f650b9e69ea9fa11c9f9%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r4c92ea39167c0f7b096ae8268db496b5451d69606f0304b7c8a994c7%40%3Cissues.nifi.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r51f8975ef47c12a46fbfd7da9efea7f08e1d307fe1dc3042514659ae%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r521a077885ce79c44a799118c878589e81e525cab72d368e5cfb6f61%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba57f49ea%40%3Cuser.karaf.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r562a0cbc5c8cac4d000a27b2854a8ab1b924aa9dd45f8ffbea98e5ad%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522%40%3Cdev.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r601f15f3de7ae3a7bbcd780c19155075c56443c2cdc1d193c03b4182%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r65c714241b9d064a44fec10d60ebf5a37d5ebadd6bf88b0eed13ade0%40%3Cissues.solr.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r734f996149bb9b1796740385fcbdf3e093eb9aabedc0f20a48ea1d68%40%3Cissues.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r75ee2a529edb892ac59110cb3f6f91844a932c5034e16c8317f5668d%40%3Ccommits.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r7f4ad5eec0bce2821c308bb23cac53df5c94eb84de1c58de9b95c176%40%3Ccommits.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r7fbdb7880be1566f943d80fbbeefde2115c086eba1bef3115350a388%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r7ffd050d3bd7c90d95f4933560b5f4f15971ab9a5f5322fdce116243%40%3Cdev.lucene.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r855b24a3bde3674256152edfc53fb8c9000f9b59db3fecbbde33b211%40%3Cissues.solr.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r857b31ad16c6e76002bc6cca73c83358ed2595477e288286ee82c48d%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r897a6a14d03eab09e89b809d2a650f3765065201da5bc3db9a4dd6e8%40%3Ccommits.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r8b1963f16d6cb1230ca7ee73b6ec4f5c48f344191dbb1caabd265ee4%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r8dc1b13b80d39fbf4a9d158850e15cd868f0460c2f364f13dca7050b%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/ra2f529da674f25a7351543544f7d621b5227c49a0745913b1194d11e%40%3Creviews.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/ra384892bab8c03a60613a6a9d5e9cae0a2b800fd882792a55520115e%40%3Ccommits.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/ra40a88a2301a3da86e25b501ff4bc88124f2b816c2917d5f3497f8f0%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31ecedafa679a%40%3Cdev.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/raa6d60b00b67c0550672b4f506f0df75b323dcd25cf574e91e2f2dff%40%3Cissues.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rb79b62ac3085e05656e41865f5a7efcbdc7dcd7843abed9c5fe0fef8%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb65d03e43%40%3Ccommits.druid.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rc721fe2910533bffb6bd4d69ea8ff4f36066d260dbcd2d14e041614a%40%3Cissues.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rd666e187ebea2fda8624683ab51e2a5ad2108f762d21bf1a383d7502%40%3Creviews.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94515796b%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254ed4feaed%40%3Cjira.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re03a4dbc15df6f390a2f8c0a071c31c8324dbef007e59fdc2592091a%40%3Ccommits.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036f3ace052c47a1202f7d70291614%40%3Cdev.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re19fa47ec901cc3cf6d7784027198e8113f8bc2dbfd6c9d6d13f5447%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re3bd4f831f9be49871cb6adb997289b5dbcd6fe4bc5cb08223254080%40%3Cdev.lucene.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re43768896273c0b5f1a03d7f0a9d370852074489d51825fdc0d77f0f%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/re819198d4732804dc01fca8b5b144689a118ede49f6128968773595c%40%3Ccommits.kafka.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/reb3c6dc050c7ee18ea154cd94dba85d99aa6b02b84c4bb2138a4abf2%40%3Creviews.spark.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/reca91f217f9e1ce607ce6e19a1c0b3db82b5b1b58cf39a84d6434695%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf190d1d28e1367d1664ef6bc2f71227566d7b6b39209817a5364da1f%40%3Cissues.solr.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf6c2efa3137bc8c22707e550a1f9b80f74bca62b9c8a6f768f2c6b86%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf77f4c4583669f1133d58cc4f1964367e253818ed8db986bb2732f7c%40%3Cnotifications.zookeeper.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rff630ce92a4d1bb494fc1a3f9b57a3d60819b436505bcd8c6ccc713c%40%3Ccommits.kafka.apache.org%3E cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2020-27223 cve-icon
https://security.netapp.com/advisory/ntap-20210401-0005/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2020-27223 cve-icon
https://www.debian.org/security/2021/dsa-4949 cve-icon cve-icon
https://www.oracle.com/security-alerts/cpuApr2021.html cve-icon cve-icon
History

Wed, 20 Aug 2025 10:15:00 +0000

Type Values Removed Values Added
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2025-08-20T10:03:37.386Z

Reserved: 2020-10-19T00:00:00

Link: CVE-2020-27223

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-26T22:15:19.317

Modified: 2025-08-20T10:15:27.843

Link: CVE-2020-27223

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-02-26T00:00:00Z

Links: CVE-2020-27223 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses