The Bitly oauth2_proxy in version 2.1 and earlier was affected by an open redirect vulnerability during the start and termination of the 2-legged OAuth flow
Published Jul 13, 2017
6.1
MEDIUMCVSS 3.0
EPSS 1.00%
Description
The Bitly oauth2_proxy in version 2.1 and earlier was affected by an open redirect vulnerability during the start and termination of the 2-legged OAuth flow. This issue was caused by improper input validation and a violation of RFC-6819
Affected products
No data.
- ≤ 2.1
No data.
No Red Hat product state for this CVE.
github.com/bitly/oauth2_proxy
Go
Introduced 0 Fixed 2.2.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/bitly/oauth2_proxy | 0 | 2.2.0 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.00% (0.00996) | 61.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.00% (0.00996) | 57.98th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.18% (0.00178) | 36.12th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.19% (0.01192) | 66.10th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.18% (0.00178) | 37.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00085) | 38.03th | v3 (v2023.03.01) |
| May 3, 2024 | 0.08% (0.00085) | 35.78th | v3 (v2023.03.01) |
| May 8, 2023 | 0.08% (0.00083) | 33.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00069) | 28.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.56% (0.02561) | 61.74th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Sep 1, 2021 | 2.74% (0.02742) | 80.38th | v1 |
| Apr 14, 2021 | 2.74% (0.02742) | 0.00th | v1 |
References (7)
- https://github.com/advisories/GHSA-jm34-xm8m-w958 Advisory
- https://github.com/bitly/oauth2_proxy/commit/289a6ccf463a425c7606178c510fc5eeb9c8b050
- https://github.com/bitly/oauth2_proxy/issues/228
- https://github.com/bitly/oauth2_proxy/pull/359 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-1000070
- https://tools.ietf.org/html/rfc6819#section-5.2.3.5 x_refsource_MISCTechnical Description
- https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-1000070
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-jm34-xm8m-w958 | Advisory | |
| https://github.com/bitly/oauth2_proxy/commit/289a6ccf463a425c7606178c510fc5eeb9c8b050 | ||
| https://github.com/bitly/oauth2_proxy/issues/228 | ||
| https://github.com/bitly/oauth2_proxy/pull/359 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-1000070 | ||
| https://tools.ietf.org/html/rfc6819#section-5.2.3.5 | x_refsource_MISCTechnical Description | |
| https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-1000070 |
Change history (0)
No recorded changes yet.