{"id":"CVE-2023-41317","aliases":["EUVD-2023-2607","GHSA-w8vq-3hf9-xppx"],"status":"published","title":"Unnamed \"Subscription\" operation results in Denial-of-Service in apollographql/router","description":"The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00805,"percentile":0.57039,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-755"],"published":"2023-09-05T18:31:43Z","modified":"2026-10-28T02:30:47Z","fixes":[{"ecosystem":"crates.io","package":"apollo-router","fixed_in":["1.29.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"apollo-router","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.28.0"},{"last_affected":"1.29.0"},{"fixed":"1.29.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"apollo-router","ranges":[{"type":"SEMVER","events":[{"introduced":"1.28.0"},{"fixed":"1.29.1"}]}]}],"products":[{"vendor":"apollographql","product":"apollo_router"},{"vendor":"apollographql","product":"router"},{"vendor":"asus","product":"router"}],"references":[{"url":"https://github.com/apollographql/router/security/advisories/GHSA-w8vq-3hf9-xppx","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/apollographql/router/commit/b295c103dd86c57c848397d32e8094edfa8502aa","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/apollographql/router/releases/tag/v1.29.1","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-41317","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-w8vq-3hf9-xppx"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41317.json","tags":["advisory"]},{"url":"https://github.com/apollographql/router","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-41317","title":"Unnamed \"Subscription\" operation results in Denial-of-Service in apollographql/router","description":"The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.","status":"published","published":"2023-09-05T18:31:43.185Z","modified":"2024-09-30T19:17:12.22Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:35:19.217111Z"}],"euvd":[{"id":"EUVD-2023-2607","description":"The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.","status":"published","published":"2023-09-05T18:31:43Z","modified":"2024-09-30T19:17:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:01.909154Z"}],"ghsa":[{"id":"GHSA-w8vq-3hf9-xppx","title":"Apollo Router Unnamed \"Subscription\" operation results in Denial-of-Service","description":"### Impact\n\nThis is a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**:\n\n1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and**\n2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and**\n3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and**\n4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router\n\nIf **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability.\n\nDepending on the environment in which impacted versions are running and the high-availability characteristics of that environment, a single Router's termination may result in limited or reduced availability or other knock-on effects which are deployment-specific (e.g., depending on if there are multiple instances, auto-restart policies, etc.)\n\n### Discovery\n\nThis vulnerability was discovered by an internal Apollo team.  We have no reports or evidence to support that that has been exploited outside of our own testing, research and follow-up.\n\nOur public security policy can be reviewed at https://github.com/apollographql/router/security/policy and we consider the security of our projects a top priority.  Please review the linked policy for more details.\n\n### Patches\n\nThis is fixed in [Apollo Router v1.29.1](https://github.com/apollographql/router/releases/tag/v1.29.1), which is available on:\n\n- [GitHub Releases](https://github.com/apollographql/router/releases) as `v1.29.1`\n- [GitHub Packages Container Registry](https://github.com/apollographql/router/pkgs/container/router) as `v1.29.1`\n- [Helm Chart Repository](https://github.com/apollographql/router/pkgs/container/helm-charts%2Frouter) as `1.29.1` (without the `v`)\n\nWe recommend all users running the impacted configuration above to update to a patched version of the Router immediately.  Router v1.29.1 should be a very simple upgrade from any impacted version. \n\n### Workarounds\n\nUpdating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [the `router` repository](https://github.com/apollographql/router)\n* Email us at `security` `[at]` `apollographql` `[dot]` `com`","status":"published","published":"2023-09-07T12:58:29Z","modified":"2023-11-07T05:04:46Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:37:15.931647Z"}],"nvd":[{"id":"CVE-2023-41317","description":"The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.","status":"published","published":"2023-09-05T19:15:48.61Z","modified":"2026-06-17T06:21:44.293Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:08:27.181588Z"}],"osv":[{"id":"CVE-2023-41317","title":"Unnamed \"Subscription\" operation results in Denial-of-Service in apollographql/router","description":"The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.","status":"published","published":"2023-09-05T18:31:43.185Z","modified":"2026-10-28T02:30:47.232748974Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"GHSA-w8vq-3hf9-xppx","title":"Apollo Router Unnamed \"Subscription\" operation results in Denial-of-Service","description":"### Impact\n\nThis is a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled.  It can be triggered when **all of the following conditions are met**:\n\n1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and**\n2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and**\n3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and**\n4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router\n\nIf **all four** of these criteria are met, the impacted versions will panic and terminate.  There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability.\n\nDepending on the environment in which impacted versions are running and the high-availability characteristics of that environment, a single Router's termination may result in limited or reduced availability or other knock-on effects which are deployment-specific (e.g., depending on if there are multiple instances, auto-restart policies, etc.)\n\n### Discovery\n\nThis vulnerability was discovered by an internal Apollo team.  We have no reports or evidence to support that that has been exploited outside of our own testing, research and follow-up.\n\nOur public security policy can be reviewed at https://github.com/apollographql/router/security/policy and we consider the security of our projects a top priority.  Please review the linked policy for more details.\n\n### Patches\n\nThis is fixed in [Apollo Router v1.29.1](https://github.com/apollographql/router/releases/tag/v1.29.1), which is available on:\n\n- [GitHub Releases](https://github.com/apollographql/router/releases) as `v1.29.1`\n- [GitHub Packages Container Registry](https://github.com/apollographql/router/pkgs/container/router) as `v1.29.1`\n- [Helm Chart Repository](https://github.com/apollographql/router/pkgs/container/helm-charts%2Frouter) as `1.29.1` (without the `v`)\n\nWe recommend all users running the impacted configuration above to update to a patched version of the Router immediately.  Router v1.29.1 should be a very simple upgrade from any impacted version. \n\n### Workarounds\n\nUpdating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions.  However, if Subscriptions are **not** necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [the `router` repository](https://github.com/apollographql/router)\n* Email us at `security` `[at]` `apollographql` `[dot]` `com`","status":"published","published":"2023-09-07T12:58:29Z","modified":"2026-09-10T03:50:03.268373286Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T15:46:58.401149Z"}]}}