CVE-2026-106491

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Source

https://cve.org/CVERecord?id=CVE-2026-106491

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106491.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-106491

Aliases

GHSA-9ghw-48h5-v2w5

Published

2026-10-06T20:45:08Z

Modified

2026-10-08T02:50:35Z

Severity

6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N CVSS Calculator

Summary

Backstage: Improper input validation in proxy-backend

Details

Backstage is an open framework for building developer portals. Prior to 0.6.17, the @backstage/plugin-proxy-backend package is affected by improper input validation in proxy-backend. An authenticated Backstage user could craft a request URL that causes the proxy-backend to forward the request to a path outside the configured base path on the target server. This is limited to target servers already configured as proxy endpoints and requires Backstage authentication by default. This issue is fixed in version 0.6.17.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-20",
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106491.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "0.6.17"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/backstage/backstage

Affected ranges

Type

GIT

Repo

https://github.com/backstage/backstage

Events

Introduced

Fixed

233287d0ce3133e41549bf92a7470c940a41753c

Fixed

0e67bc1fc88fba3a8cb716d3584cef05ecbcf9a8

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.54.6"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

Other

cli-old-cache-watch

hackweek-demo

release-2021-01-07

release-2021-01-08

release-2021-01-09

release-2021-01-14

release-2021-01-18

release-2021-01-20

release-2021-01-21

release-2021-01-28

release-2021-01-29

release-2021-02-01

release-2021-02-03

release-2021-02-05

release-2021-02-11

release-2021-02-16

release-2021-02-18

release-2021-02-23

release-2021-03-04

release-2021-03-09

release-2021-03-11

release-2021-03-16

release-2021-03-17

release-2021-03-18

release-2021-03-19

release-2021-03-25

release-2021-03-31

release-2021-04-08

release-2021-04-13

release-2021-04-15

release-2021-04-21

release-2021-04-22

release-2021-04-29

release-2021-05-04

release-2021-05-06

release-2021-05-10

release-2021-05-11

release-2021-05-12

release-2021-05-17

release-2021-05-20

release-2021-05-27

release-2021-05-31

release-2021-06-01

release-2021-06-03

release-2021-06-10

release-2021-06-17

release-2021-06-18

release-2021-06-21

release-2021-06-24

release-2021-06-28

release-2021-07-01

release-2021-07-07

release-2021-07-08

release-2021-07-14

release-2021-07-15

release-2021-07-16

release-2021-07-22

release-2021-07-29

release-2021-08-03

release-2021-08-05

release-2021-08-11

release-2021-08-12

release-2021-08-17

release-2021-08-19

release-2021-08-20

release-2021-08-26

release-2021-08-31

release-2021-09-02

release-2021-09-09

release-2021-09-14

release-2021-09-16

release-2021-09-17

release-2021-09-21

release-2021-09-23

release-2021-09-28

release-2021-09-30

release-2021-1-7

release-2021-10-04

release-2021-10-06

release-2021-10-07

release-2021-10-11

release-2021-10-13

release-2021-10-14

release-2021-10-16

release-2021-10-19

release-2021-10-21

release-2021-10-22

release-2021-10-28

release-2021-10-29

release-2021-11-08

release-2021-11-11

release-2021-11-12

release-2021-11-17

release-2021-11-18

release-2021-11-19

release-2021-11-25

release-2021-12-02

release-2021-12-07

release-2021-12-09

release-2021-12-10

release-2021-12-16

release-2021-12-23

release-2021-12-24

release-2021-12-30

release-2022-01-04

release-2022-01-13

release-2022-01-18

release-2022-01-20

release-2022-01-27

release-2021-01-14.*

release-2021-01-14.1

release-2021-01-21.*

release-2021-01-21.1

release-2021-03-11.*

release-2021-03-11.1

release-2021-03-31.*

release-2021-03-31.1

release-2021-04-22.*

release-2021-04-22.1

release-2021-05-12.*

release-2021-05-12.1

release-2021-05-20.*

release-2021-05-20.1

release-2021-06-10.*

release-2021-06-10.1

release-2021-06-17.*

release-2021-06-17.1

release-2021-06-21.*

release-2021-06-21.1

release-2021-07-14.*

release-2021-07-14.1

release-2021-10-29.*

release-2021-10-29.1

release-2021-11-11.*

release-2021-11-11.1

release-2021-11-17.*

release-2021-11-17.1

release-2022-01-20.*

release-2022-01-20.1

v0.*

v0.1.0

v0.1.1

v0.1.1-alpha.0

v0.1.1-alpha.1

v0.1.1-alpha.10

v0.1.1-alpha.11

v0.1.1-alpha.12

v0.1.1-alpha.13

v0.1.1-alpha.15

v0.1.1-alpha.16

v0.1.1-alpha.17

v0.1.1-alpha.18

v0.1.1-alpha.19

v0.1.1-alpha.2

v0.1.1-alpha.20

v0.1.1-alpha.21

v0.1.1-alpha.22

v0.1.1-alpha.23

v0.1.1-alpha.24

v0.1.1-alpha.25

v0.1.1-alpha.26

v0.1.1-alpha.3

v0.1.1-alpha.4

v0.1.1-alpha.5

v0.1.1-alpha.6

v0.1.1-alpha.7

v0.1.1-alpha.8

v0.10.0

v0.11.0

v0.11.1

v0.11.2

v0.11.3

v0.12.0

v0.13.0

v0.13.1

v0.14.0

v0.15.0

v0.16.0

v0.16.1

v0.17.0

v0.17.1

v0.17.2

v0.17.3

v0.18.0

v0.18.1

v0.19.0

v0.2.0

v0.20.0

v0.20.1

v0.21.0

v0.21.1

v0.22.0

v0.22.1

v0.22.2

v0.23.0

v0.24.0

v0.24.1

v0.25.0

v0.25.1

v0.25.2

v0.25.3

v0.26.0

v0.26.1

v0.27.0

v0.28.0

v0.29.0

v0.29.1

v0.29.2

v0.3.0

v0.3.1

v0.3.2

v0.30.0

v0.30.1

v0.31.0

v0.32.0

v0.33.0

v0.33.1

v0.33.2

v0.33.3

v0.34.0

v0.34.1

v0.35.0

v0.35.1

v0.36.0

v0.36.1

v0.36.2

v0.37.0

v0.37.1

v0.38.0

v0.39.0

v0.39.1

v0.4.0

v0.4.1

v0.4.2

v0.4.3

v0.40.0

v0.40.1

v0.41.0

v0.41.1

v0.42.0

v0.43.0

v0.44.0

v0.44.1

v0.45.0

v0.46.0

v0.46.1

v0.47.0

v0.47.1

v0.47.2

v0.48.0

v0.48.1

v0.49.0

v0.5.0

v0.50.0

v0.50.1

v0.50.2

v0.51.0

v0.51.1

v0.51.2

v0.52.0

v0.52.1

v0.53.0

v0.53.1

v0.53.2

v0.53.3

v0.54.0

v0.54.1

v0.54.2

v0.54.3

v0.54.4

v0.55.0

v0.55.1

v0.56.0

v0.57.0

v0.57.1

v0.58.0

v0.58.1

v0.59.0

v0.6.0

v0.60.0

v0.60.1

v0.61.0

v0.62.0

v0.63.0

v0.63.1

v0.64.0

v0.64.1

v0.65.0

v0.66.0

v0.66.0-next.0

v0.66.0-next.1

v0.67.0

v0.67.0-next.0

v0.68.0

v0.69.0

v0.7.0

v0.70.0

v0.71.0

v0.71.0-next.0

v0.8.0

v0.8.1

v0.8.2

v0.9.0

v1.*

v1.0.0

v1.1.0

v1.1.0-next.0

v1.1.0-next.1

v1.1.0-next.2

v1.1.0-next.3

v1.10.0

v1.10.0-next.0

v1.10.0-next.1

v1.10.0-next.2

v1.11.0

v1.11.0-next.0

v1.11.0-next.1

v1.11.0-next.2

v1.12.0

v1.12.0-next.0

v1.12.0-next.1

v1.12.0-next.2

v1.13.0

v1.13.0-next.0

v1.13.0-next.1

v1.13.0-next.2

v1.13.0-next.3

v1.14.0

v1.14.0-next.0

v1.14.0-next.1

v1.14.0-next.2

v1.15.0

v1.15.0-next.0

v1.15.0-next.1

v1.15.0-next.2

v1.15.0-next.3

v1.16.0

v1.16.0-next.0

v1.16.0-next.1

v1.16.0-next.2

v1.17.0

v1.17.0-next.0

v1.17.0-next.1

v1.17.0-next.2

v1.18.0

v1.18.0-next.0

v1.18.0-next.1

v1.18.0-next.2

v1.18.0-next.3

v1.19.0

v1.19.0-next.0

v1.19.0-next.1

v1.19.0-next.2

v1.2.0

v1.2.0-next.0

v1.2.0-next.1

v1.2.0-next.2

v1.2.0-next.3

v1.20.0

v1.20.0-next.0

v1.20.0-next.1

v1.20.0-next.2

v1.21.0

v1.21.0-next.0

v1.21.0-next.1

v1.21.0-next.2

v1.21.0-next.3

v1.21.0-next.4

v1.22.0

v1.22.0-next.0

v1.22.0-next.1

v1.22.0-next.2

v1.23.0

v1.23.0-next.0

v1.23.0-next.1

v1.23.0-next.2

v1.23.0-next.3

v1.24.0

v1.24.0-next.0

v1.24.0-next.1

v1.24.0-next.2

v1.24.1

v1.24.2

v1.25.0

v1.26.0

v1.26.0-next.0

v1.26.0-next.1

v1.27.0

v1.27.0-next.0

v1.27.0-next.1

v1.27.0-next.2

v1.28.0

v1.28.0-next.0

v1.28.0-next.1

v1.28.0-next.2

v1.28.0-next.3

v1.29.0

v1.29.0-next.0

v1.29.0-next.1

v1.29.0-next.2

v1.3.0

v1.3.0-next.0

v1.3.0-next.1

v1.3.0-next.2

v1.30.0

v1.30.0-next.0

v1.30.0-next.1

v1.30.0-next.2

v1.30.0-next.3

v1.30.0-next.4

v1.31.0

v1.31.0-next.0

v1.31.0-next.1

v1.31.0-next.2

v1.32.0

v1.32.0-next.0

v1.32.0-next.1

v1.32.0-next.2

v1.33.0

v1.33.0-next.0

v1.33.0-next.1

v1.33.0-next.2

v1.33.0-next.3

v1.34.0

v1.34.0-next.0

v1.34.0-next.1

v1.34.0-next.2

v1.35.0

v1.35.0-next.0

v1.35.0-next.1

v1.35.0-next.2

v1.36.0

v1.36.0-next.0

v1.36.0-next.1

v1.36.0-next.2

v1.36.0-next.3

v1.37.0

v1.37.0-next.0

v1.37.0-next.1

v1.37.0-next.2

v1.38.0

v1.38.0-next.0

v1.38.0-next.1

v1.38.0-next.2

v1.39.0

v1.39.0-next.0

v1.39.0-next.1

v1.39.0-next.2

v1.39.0-next.3

v1.4.0

v1.4.0-next.0

v1.4.0-next.1

v1.4.0-next.2

v1.4.0-next.3

v1.40.0

v1.40.0-next.0

v1.40.0-next.1

v1.40.0-next.2

v1.40.0-next.3

v1.41.0

v1.41.0-next.0

v1.41.0-next.1

v1.41.0-next.2

v1.42.0

v1.42.0-next.0

v1.42.0-next.1

v1.42.0-next.2

v1.42.0-next.3

v1.43.0

v1.43.0-next.0

v1.43.0-next.1

v1.43.0-next.2

v1.44.0

v1.44.0-next.0

v1.44.0-next.1

v1.44.0-next.2

v1.44.0-next.3

v1.45.0

v1.45.0-next.0

v1.45.0-next.1

v1.45.0-next.2

v1.45.0-next.3

v1.46.0

v1.46.0-next.0

v1.46.0-next.1

v1.46.0-next.2

v1.47.0

v1.47.0-next.0

v1.47.0-next.1

v1.47.0-next.2

v1.47.0-next.3

v1.48.0

v1.48.0-next.0

v1.48.0-next.1

v1.48.0-next.2

v1.49.0

v1.49.0-next.0

v1.49.0-next.1

v1.49.0-next.2

v1.5.0

v1.5.0-next.0

v1.5.0-next.1

v1.5.0-next.2

v1.5.0-next.3

v1.50.0

v1.50.0-next.0

v1.50.0-next.1

v1.50.0-next.2

v1.51.0

v1.51.0-next.0

v1.51.0-next.1

v1.51.0-next.2

v1.51.0-next.3

v1.52.0

v1.52.0-next.0

v1.52.0-next.1

v1.52.0-next.2

v1.53.0

v1.53.0-next.0

v1.53.0-next.1

v1.53.0-next.2

v1.54.0

v1.54.0-next.0

v1.54.0-next.1

v1.54.0-next.2

v1.54.0-next.3

v1.54.1

v1.54.2

v1.54.3

v1.54.4

v1.54.5

v1.6.0

v1.6.0-next.0

v1.6.0-next.1

v1.6.0-next.2

v1.6.0-next.3

v1.7.0

v1.7.0-next.0

v1.7.0-next.1

v1.7.0-next.2

v1.8.0

v1.8.0-next.0

v1.8.0-next.1

v1.8.0-next.2

v1.9.0

v1.9.0-next.0

v1.9.0-next.1

v1.9.0-next.2

v1.9.0-next.3

v1.9.0-next.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106491.json"